signed copy of a book

is the best among (others)

(offensive, Internet slang) Alternative form of 子供部屋おじさん

(offensive, Internet slang) a man whose age is greater than about thirty or forty who lives in one's child room and with one's parent(s).

double room

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

Kyūjitai form of 中国

a text written in Chinese / abbreviation of 中国文学 (chūgoku bungaku, “Chinese literature”)

(neuroanatomy) midbrain

Kyūjitai form of 中継