stud 1 
(stŭd)
(stŭd)n.
1. An upright post in the framework of a wall for supporting sheets of lath, drywall, or similar material.
2. A small knob, nail head, or rivet fixed in and slightly projecting from a surface.
3.
a. A small ornamental button mounted on a short post for insertion through an eyelet, as on a dress shirt.
b. A buttonlike earring or other piercing mounted on a slender post, as of gold or steel.
4.
a. Any of various protruding pins or pegs in machinery, used mainly as a support or pivot.
b. One of a number of small metal cleats embedded in a snow tire to increase traction on slippery or snowy roads.
5. A metal crosspiece used as a brace in a link, as in a chain cable.
tr.v. stud·ded, stud·ding, studs
1. To provide with or construct with studs or a stud.
2. To set with studs or a stud: stud a bracelet with rubies.
3. To be scattered over: Daisies studded the meadow.
[Middle English stode, from Old English studu; see stā- in the Appendix of Indo-European roots.]