a male given name

Kyūjitai form of 知内

(slang) Short for 知的障害者.

cunning

(history, government) a 律令 (ritsuryō) department under the 中務省 (Nakatsukasashō, “Ministry of the Center”), responsible for managing books and stationery used by officials

calendar / era

the Gregorian calendar

history (record or narrative description of past events) / a person's background, career, or personal history

(geology) conglomerate

revision of the calendar (e.g. from lunar to solar) / change of calendar at the start of the year