(humble, only refers to one's own) a wife (married woman)

a man / a son

to have sex with (someone else's spouse or lover); to be in cahoots with (an adulterous, cuckolding or cheating person)

cuckoldry: the state of being cheated on by one's own spouse or lover; the state of being subjected to adultery or cheating

(sex) cuckolding someone

妻: wife / Alternative spelling of つめ　(tsume, 爪), nail

spouse

my wife

a side dish / a tangent, a digression, something to the side of the main thing

spouse, consort