stud

1. A small object that protrudes from something; an ornamental knob. · a collar with studs
2. A style of earring where the decorative element is mounted on a straight post. · 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 cleat on a shoe.
5. A type of poker in which the player cannot discard, and some of the cards are exposed.
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.

الجمع studs