adj. 1. Brought together for sexual activity; bred; -- of animals. [ WordNet 1.5 ]
2. Sorted into pairs of identical size, color, or other properties; -- used of gloves, socks, etc. Syn. -- paired. [ WordNet 1.5 ]
3. Same as married. Opposite of unmarried; as, they were a devoted couple, mated for life. [ WordNet 1.5 ]