1 wives and concubines (of a polygamous man)

2 harem

1 concubine

2 I, your servant (deprecatory self-reference for women)

1 maids and concubines

1 to take a concubine

1 (literary) I, your servant (self-appellation of a lower-rank female)

2 (archaic) male and female slaves

3 subjects (of a ruler)

1 favor the concubine and do away with the wife (idiom)

2 spoil one's mistress and neglect one's wife