having served one's purpose

(archaic, obsolete) to use, make use of, utilize / (archaic, obsolete) to adopt / (archaic, obsolete) to assign, appoint

self-defense

Kyūjitai form of 当用: general use, current use, daily use

(grammar) declension

(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

乳: milk; breast; latex (milky substance in plants) / 父: one's own father; a father figure; the Christian God / 致知: the pursuit of knowledge; / 遅遅, 遅々: slowness, tardiness; a long day

遅遅, 遅々: to be late

乳, 父: a surname / 父子: a place name

日日: day by day