Here’s the glossary included in the x365 BD Box booklet. I’ve changed the order of the terms from the Japanese system to alphabetical order for our purposes. Also, as I’ve said before, I barely know anything about the radio series, so there are a lot of references I didn’t get. Could someone lend a hand?

Hidamari Glossary

Here is a single collection of tons of explanations for the various terms that have appeared in Hidamari Sketch so far. With this, even you can become a master of Hidamari!!

____s(u): Derivatives of Kana Asumi’s nickname “Asumis”. “Mizuhasu” for Kaori Mizuhashi, “Shintasu” for Ryoko Shintani, “Gotos” for Yuko Goto, “Matsukis” for Miyu Matsuki, “Umesu” for Ume-sensei, etc. There are many variations.

Aomushi-kun: The larva that Yuno kept as a pet. It came with the vegetables sent from Yuno’s parents. As a result of being carefully raised, it grew into a splendid “moth” and flew into the sky.

Apple Rabbit: The work of art Miyako created for Yuno when she caught a cold. For more details, see season 1 episode 5, “Heart and Body”.

Asumis: An affectionate nickname for Yuno’s voice actress, Kana Asumi. Other new nicknames “Asumin” and “Asumittsu” originated in the Hidamari Radio x ☆☆☆ program. Afterwards, it has been used in the titles of many radio CDs. It was also called “National Therapy Poison” because of the abusive language on the radio. [What?]

Aya Tachibana: The pen name of the active high schooler author Sae. The origin of this name is….. Maybe it will become clear later on.

Barbeque: Food pierced with a skewer grilled directly over a kitchen stove, or what Miyako is best at cooking heartily. Be careful not to singe your hair!

Berry Mart: Similar to Dada Mart, it is a convenience store located close to Hidamari Apartments. It closes at 7:30 PM, but if you wake up the store’s old lady, you can shop 24 hours (apparently).

Bicycle Boy Shinya-kun: A TV program in the Hidamari world. The voices can occasionally be heard from the TV. It said that he is traveling from Tokyo to Fukuoka by bicycle. The documentary followed Shinya-kun’s extreme efforts. Original stories frequently appear and these cheerful subcontents appear to all be written by the scriptwriter. A work of art, a full array of masterpieces!!

“Blessings of the Northern Sea” Meal: The prize Miyako won for completing the crossword puzzle. The crossword’s answer was, by some twist of fate, “Hidamari”.

Boys’ Puzzle: The OP song for the first installment of Hidamari Radio x 365. Cho (The Principal) enthusiastically sang (with changes to the lyrics) “Girls’ Puzzle” by Kana Asumi (Yuno). At first it was only used on the radio, but on the CD “Hidamari Radio x 365 Special Edition ~ Yes! Asumis!!~” the rest was recorded. The version used was an event singing, a big success.

Brutus: Politician Marcus Junius Brutus who assassinated Roman Emperor Caesar. Caesar’s last words, “Et tu, Brutus” are extremely famous. Brutus is also very famous for having his plaster cast used as a motif.

Chikurin: The mysterious organism Yuno imagined due to the sound of the word for “bamboo thicket”. It has protruding thorns that somehow seem like they would hurt if they got stuck on you.

Chinese Crab Fried Rice: Special menu item of the “Chinese Fair” at Yamabuki High School’s cafeteria. Comes with chicken soup for only 400 yen!! Seems like a luxury at that price. For more details, see season 3 episode 8.

Count Lead-in: The countdown image at the beginning of the anime. Season 1 was a sun, season 2 was seasonal flowers, and season 3 used a horoscope motif. Hidamari Sketch x SP’s count lead-in was produced by Gekidan Inu Curry, known for their sense of whimsical imagery. The BGM used, “Sate sate”, has never changed.

Da-cha~n: Nickname for Nori’s voice actress, Hitomi Harada. Originally “Harada-cha~n”, coined by Kaori Mizuhashi (Miyako) but then shortened. Often written using half-width kana.

Dada Mart: A supermarket of great help to Yuno and friends. A huge range of foodstuffs line the shelves, so for someone who cooks for themselves like Hiro, it’s a store to be very thankful for.

Destiny Land: The theme park admired by men and women of all ages nationwide. Inside the park there are castles that appear to have come out of fairy tales. Various attractions line the establishment. Its mascot character is a bunny named Teeny.

Director: The bicycle given to Yuno and Miyako by a classmate. Everyone at Hidamari Apartments happily shares it. It was named by Miyako.

Dokodemo Sugoroku x 365: A Hidamari Sketch game released for Nintendo DS. It is a “Hidamari Life Variety Game”. There are lots of mini-games!

Embarrassment-Reducing Cushion: A cushion that reduces embarrassment and awkwardness when holding someone close. Insert between your own body and your partner’s. It’s just a cushion. For proper usage, please see Hidamari Sketch x 365 episode 12, “Don’t Look”. [Yes, it really is written like this.]

Eternally 17:  Yoshinoya-sensei’s cosplay photo album made at the time of the Yamabuki Festival for Hiro and Sae’s class. It was limited to 300 copies and immediately sold out. This item suggests that Yoshinoya-sensei is very popular. For more details, see season 1 episode 11, “Round Cabbage”.

Farce: The small drama at the beginning of each Hidamari Radio opening. The radio director and organizer Hiroshi Osada produced a quality script. The forefront voice actress Kana Asumi’s performance is first-rate entertainment. (No way!)

Fashionable Detective Lovely Chocolat:  A super-popular and legendary afternoon melodrama starring the great detective main character Chocolat and his assistant Chokoyama who go to solve difficult cases again and again. It seems to have captured the hearts of many teens (despite being an afternoon melodrama).

Gigacchi: Special item bundled with the Hidamari Sketch x 365 Specials Limited Edition DVD. It was a USB memory stick shaped like Yuno’s head. Inside were recordings of Hidamari Radio x 365 #1 to #12.

Hidamarer: A  Hidamari Sketch fan. Everyone reading this booklet, you’re all excellent Hidamarers.

Hidamatsuri: The name of all Hidamari Sketch events big and small so far. Particularly large events are upgraded with “Super” (Like 2010’s Super Hidamatsuri 2-4 Hour TV”)

Hidamari Chaos Sketch: OP song for Hidamari Radio x ☆☆☆ that was planned in “Visual Hidamari Radio x Mou Sugu”. Kana Asumi, Kaori Mizuhashi, Yuko Goto, Ryoko Shintani, and Miyu Matsuki each wrote their own part of the song. As a result, like the title itself, it was a chaotic song. Unfortunately, it ended up only being used in installment #3.

Hidamari King: The honorable title bestowed upon a single stalwart who knows all there is to know about Hidamari Sketch. The first generation Hidamari King is Kyousuke. [Here’s his Twitter and Pixiv.]

Hidamari Radio: Web radio program with Kana Asumi (Yuno) as the main personality. Spirited radio director and organizer Hiroshi Osada and Kana Asumi united their offbeat characters and thus an anime radio show like never before was born. You can listen to it, including past installments, on the current Lantis homepage.

Hidamari Sketch-chan: The legendary artist, master painter Rasu-chan’s (details mentioned later) doujin manga magazine. A limited amount were sold at 2010’s Comic Market 78. Afterwards at ACE 2012, two kinds of specially designed T-shirts, a special recording of “Hidamari Radio-chan”, and even a Rasu bag packed with goods was put out for sale.

Kamajii [written as sickle + old man]: An old man invited to the “Free Spirits of Hidamari Apartments” corner in Hidamari Radio #5. He would appear weekdays from 2 to 6. If you approached the bamboo thicket he would shout “Hey!!” and chase after you with a sickle (apparently).

Leftover Rice: Hidamari Radio bonus program featuring main personality Kana Asumi and advertising producer Yuma Takahashi (Aniplex). Hidamari Radio is distributed on the Lantis official website and this is distributed on the official TBS Hidamari Sketch website.

Love Is True : The hugely popular romance cell phone novel that Yoshinoya was engrossed in. So engrossed that she became extremely careless. Yuno and the other girls thought it was due to love sickness and started worrying about her. For more details, see season 3 episode 6.

Manga Time Kirara Carat: The monthly 4koma magazine in which Hidamari Sketch is serialized. Don’t miss “Yamabuki High School Broadcasting Club Lounge Notebook”, the page of reader contributions. Goes on sale each month on the 28th!!

marble: The performers of Hidamari’s various ending songs that bring each episode to a close. They are the “Organic Pop Unit” indispensable to Hidamari Sketch’s music. The two members are vocalist micco and guitarist Tatsuya Kikuchi. The delicate, crystal-clear melodies and singing voice are one of Hidamari Sketch’s greatest charms. Look forward to hearing them in season 4, too!!

Master Painter Rasu-chan: An artist born from a certain radio project. Because they suggested, “I want to appear on the Lounge Notebook submission page!” Kana Asumi and Hiroshi Osada were continuously defeated mustering their wits and being defeated repeatedly by the anonymous submissions. Before the end of the radio program, on the final opportunity, the artist won out and made a splendid appearance under the pen name Rasu-chan (from the words “Last Chance”). The heartwarming union was broadcast in Hidamari Radio x 365 #12.

Micha Dame [Don’t Look]: Words sung by Ume Aoki-sensei in her character song “Tobikiri Switch” from the character song album “HidaChara”. While on-stage at the 2007 Super Hidamatsuri, the Yokohama Blitz suddenly shook the moment Ume-sensei said “Don’t look!” Here, Umesu was born a new legend.

Monthly Kirara: The monthly literary magazine in which Sae’s stories are published. Despite being a literary magazine, its front cover is impressive and cute with bright colors. For Sae not to find out, Hiro and Natsume secretly read it with pleasure.

Plunger: A tool with a rubber hemisphere attached to it, used to fix water pipes and toilets. Was called a plugger (Yuno), splasher (Miyako) and sucker (Nakayama-san). The only one who knew its proper name was Mami-chan. [Everyone translated this scene differently, so just using what anon’s manga scanlation had here. By the way, in both BD Box booklets, Mami’s name is misprinted using the wrong kanji. It is supposed to be written as 真実 (truth) not 真美 (true beauty).]

Saw: Otherwise known as a “hammer”. A concise word for someone who can’t swim, used only by Yuno. Later on she evolved into a “wooden mallet” after some intensive training. See Hidamari Sketch xSP’s first part, “August 28th: Floaty”.

Sealed Past: A mysterious folder on the desktop of Nori’s PC. According to her, it seems “If you open it [she’ll] go half-crazy.” Why did she put such hazardous materials on the desktop, then? [危険物, huh…]

Sekaiya: A painting supplies store located in a neighboring town. Students in the art program like Yuno and her friends visit frequently.

Senior Project: A completely voluntary exhibited work that third-year Yamabuki High School students make in preparation for graduation. The school is not affiliated with them, so students have complete freedom in their display’s contents and its location. It seems every year, fiercely individualistic masterpieces are created in great numbers.

Toukagawa:  A Class A river about 20 minutes away by bicycle from Hidamari Apartments. It is a great relaxation spot for the locals with baseball grounds and bicycle paths in its riverbed. According to Miyako, if a seal came to the river its name would be Tou-chan.

Ume-sensei: Nickname for Hidamari Sketch’s original author, Ume Aoki. Others include “Umesu”, “Ume-tentei”, and “God”. Her self-portrait is a caricature in the form of a cute caterpillar. [Just “aomushi”, nothing more specific than that. If you Google 青虫 some Ume-shaped ones certainly pop up.]

Village of Meat: 100 minutes of an appealing all-you-can-eat yakiniku buffet, priced at 3000 yen per person. Other than yakiniku, sushi and even desserts are offered!! Thanks to her part-time job earnings, the Landlady was able to bring along everyone at Hidamari Apartments (although, in the end she was short on cash).

Visual Hidamari Radio: The groundbreaking “visual edition” program of Hidamari Radio. Like the radio, it was a “one-shot” recording. There were 3 cameras: on Asumi, on the plushies, and then a more distant camera. The cameras’ blind spot hid director Hiroshi Osada frantically moving the plushies and props around. Osada says, “I don’t ever want to do that again.”

White-Packed Bento: The lunch Hiro made for the Yamabuki sports festival (the 4 Hidamari tenants were on the red team). Pounded fish cake and cheese, fried eggs, etc. Everything was pure white.

The Wolf of Shinjuku Backstreets: The title of the film that Maiko Kishi, Yamabuki High School graduate and one of Yoshinoya-sensei’s former students, directed. It won a special award at the 28th Blue Sky Foods Film Contest.

Xs: Yuno’s hair clips. Miyako calls her “Yuno” if she removes them, so it’s very likely that the proper name of these hair clips is “cchi”. Also, if Miyako puts them on, she transforms into “Miyacchi” (not really).

Yamabuki Sentai Hidamarin: The secret sentai team formed in order to protect the peace at Hidamari Apartments. It played a role in the drama CD included with the first limited edition DVD volume of Hidamari Sketch x 365, and also featured on trading cards commemorating the DVD release, as well as other things. The team members are the following four:

“Slender Glasses” HidaBlue: Sae

“Fluffy Diet” HidaPink: Hiro

“Hungry Youth” HidaYellow: Miyako

“X Saw” HidaOrange: Yuno

Not to mention, Hidamarin’s arch nemesis is the mysterious Yoshinoya who also aspired to join the team, but her entry was postponed because the title of HidaGreen was already taken by Ume-sensei.

Yes! Asumis!: Strange words suddenly blurted out by guest star Miyu Matsuki (Yoshinoya-sensei) in Hidamari Radio #5. From then on it was established as the radio’s salutation. Regardless of being on the radio, Miyu Matsuki made her entrance cosplaying as a nurse. In that installment, legendary new words were coined one after the other, like “Kamajii” and “Meccho”.

Yume Glider [Dream Glider]: The song Yuno often sings at karaoke and the like. “Mado no soto ni ne~ hirogaru ♪” marks the familiar beginning of the song. Though she sings out of tune, an on-key version was recorded for the radio CD “Hidamari Radio Special Edition: Yes! Asumis!!~”