stud

/stʌd/

noun

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

1
A small object that protrudes from something; an ornamental knob.
“a collar with studs”
2
(jewelry) A small round earring.
“She's wearing studs in her ears.”
3
A vertical post, especially one of the small uprights in the framing for lath and plaster partitions, and furring, and upon which the laths are nailed.
4
A stem; a trunk.
5
A type of poker where an individual cannot throw cards away and some of her cards are exposed (also stud poker).
6
A short rod or pin, fixed in and projecting from something, and sometimes forming a journal.
7
A stud bolt.
8
An iron brace across the shorter diameter of the link of a chain cable.

1
A person who studies or learns about a particular subject.
“He is a student of life.”
2
A person who is formally enrolled at a school, a college or university, or another educational institution.