1. (n.)stud a boss, knob, nailhead, or other protuberance projecting from a surface or part, esp. as an ornament.
2. stud any buttonlike, usu. ornamental object mounted on a shank that is passed through an article of clothing to fasten it: a collar stud.
3. stud any of a number of slender, upright members of wood, steel, etc., forming the frame of a wall or partition and covered with plasterwork, siding, etc.
4. stud any of various projecting pins, lugs, or the like on machines or other implements.
5. stud an earring consisting of a small, buttonlike ornament mounted on a metal post designed to pass through a pierced ear lobe.
6. (v.t.)stud to set with or as if with studs or the like.
7. stud to be scattered over the surface of: Stars studded the sky.
3. (noun)Stud an upright scanting, esp. one of the small uprights in the framing for lath and plaster partitions, and furring, and upon which the laths are nailed
5. (noun)Stud an ornamentalbutton of various forms, worn in a shirt front, collar, wristband, or the like, not sewed in place, but inserted through a buttonhole or eyelet, and transferable
6. (noun)Stud a short rod or pin, fixed in and projecting from something, and sometimes forming a journal