concubine

n (in countries where a man can legally have more than one wife) woman who lives with a man but is of lower status than a wife （一夫多妻制国家中的）妾, 姨太太, 小老婆: The sultan's wives and concubines live in the harem. 苏丹的妻妾住在後宫.

concision, conclave, conclude, conclusion, conclusive, conclusively, concoct, concoction, concomitant, concord, concordance, concordant, concordat, concourse, concrete, concrete mixer, concrete music, concrete poetry, concretely, concretion, concupiscence, concur, concurrence, concurrent, concurrently, concuss, concussion, condemn, condemnation, condemned, condemned cell, condensation, condensation trail, condense, condensed, condenser, condescend, condescending, condescendingly, condescension,