noun:

• beheading; decapitation - obscure term

noun:

• homonym - obscure term ➜ 同音異義語

noun:

• stapler; paper fastener - obscure term ➜ ホチキス

noun:

• senior priest (of a Shinto shrine, below chief priest and deputy chief priest) - Shintō term ➜ 宮司・神主
• grasshopper; locust - obscure term

noun:

• armor, helmet & shield (armour) - obscure term
• kakurei, kakuun & kakumei (first, fifth and fifty-eighth years of the sexagenary cycle; times of civil unrest according to Onmyōdō) ➜ 陰陽道

noun:

• foretelling; prophecy - obscure term

noun:

• penile smegma; dick cheese - slang - vulgar ➜ 恥垢

expression / godan ~る verb:

• to waste one's efforts; to work to no (useful) effect - obscure term - idiom

noun:

• vaginal smegma - slang - vulgar ➜ 恥垢

noun:

• gook (pejorative term for Koreans) - blend of チョン and チンカス - vulgar - slang - obscure term

noun:

• butterfly valve - obscure term ➜ バタフライバルブ

noun:

• extremely poor person - obscure term - slang ➜ ビンバー・貧乏
• third degree poverty - obscure term - slang

noun:

• complex preposition - obscure term ➜ 群前置詞

noun:

• bullet wound; gunshot wound - obscure term ➜ 銃創

noun:

• head; dome; bean; nob; noggin - derogatory term

interjection:

• fuck you - vulgar - colloquialism

~と adverb / adverb:

• bawling; crying - obscure term - onomatopoeia

noun:

• scab (i.e. a strikebreaker) - obscure term ➜ スト破り

noun:

• doubles (tennis, etc.) - obscure term ➜ ダブルス

noun:

• Japanese zelkova (species of elm-like tree, Zelkowa serrata) - obscure term ➜ 欅

noun:

• quasi-negation (e.g. use of words like 'hardly', 'seldom', 'barely'); weak negation - obscure term - Linguistics term

noun:

• kidney punch - obscure term

noun:

• mistress; concubine - archaism - obscure term

noun:

• morin khuur (stringed musical instrument of Mongolian origin) - obscure term - From Mongolian ➜ 馬頭琴

noun:

• pitch accent - obscure term ➜ 高低アクセント