studˈly adjective (slang)

1. Strong and powerful
2. (of a man) sexually attractive

studˈbook noun

A record of horses' (or other animals’) pedigrees

studˈfarm noun

A horse-breeding farm

stud groom noun

A groom at a stud, esp the head groom

stud horse noun

A stallion kept for breeding

stud muffin noun (N American informal)

A sexually attractive young man

stud poker noun

A variety of the game of poker in which bets are placed on hands containing some cards dealt face up

at stud or out to stud

Being used for breeding purposes