use one thing for many purposes / work someone hard

to use one's head

everything

(colloquial) current boyfriend

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

child

an object which has a subservient or derivative role relative to another object

suffix used in female given names, such as 智子 (Tomoko), 英子 (Eiko), 秀子 (Hideko), 美奈子 (Minako) / (rare) suffix used in male given names

a surname