noun

1. any of a series of small knobs or rounded nailheads used to ornament a surface, as of leather
2. a small, buttonlike device with a smaller button or shank on the back, inserted in a shirt front as an ornament or fastener
3. any of a number of upright pieces in the outer or inner walls of a building, to which panels, siding, laths, etc. are nailed
4. a metal crossbar bracing a link, as in a chain cable
5. a projecting pin or peg used as a support, pivot, stop, etc. or, as in an automobile tire, to increase traction on ice
6. a screw threaded at each end, used in fastening metal to metal or concrete
7. an earring consisting of a small ornament, as a gem, on a metal post that passes through a hole in the ear lobe, held in place by a fastener that attaches behind the ear
   in full stud earring

Etymology: ME stode < OE studu, column, pillar, post, akin to ON stoth, Ger stützen, to prop < IE *stūt- < base *stā-, to stand

transitive verb studded stud′·ded, studding stud′·ding

1. to set or decorate with studs or studlike objects a crown studded with jewels
2. to be set thickly on; be scattered over rocks stud the hillside
3. to provide (a building) with studs or upright members

noun

1. 1. a number of horses, or sometimes other animals, esp. as kept for breeding
   2. the place where these are kept
2. ☆
   1. studhorse
   2. any male animal used esp. for breeding
3. Slang a virile, sexually promiscuous man
4. stud poker

Etymology: ME stod < OE, akin to Ger stute, mare (OHG stuot, stud of horses) < IE *stādh- < base *sta-, to stand

adjective

1. of or having to do with a stud a stud farm
2. kept for breeding