con|cu|bine «KONG kyuh byn, KON-», noun.
1. a woman who lives with a man without being legally married to him.
2. a wife who has an inferior rank or rights (in countries where polygamy is legal).
╂[< Old French concubine, learned borrowing from Latin concubīna < com- with + cubāre to lie, recline]
Useful english dictionary. 2012.