Definitions
1.nounA male animal, especially a stud horse (stallion), kept for breeding.
2.nounA female animal, especially a studmare (broodmare), kept for breeding.
3.noun(also by extension) A group of such animals.
4.nounAn animal (usually livestock) that has been registered and is retained for breeding.
5.nounA place, such as a ranch, where such animals are kept.
6.nounA sexually attractive male; also a lover in great demand.