Definition from Merriam-Webster:
1. noun
- a piece of wood, metal, or plastic used especially for fastening things together or for hanging one thing from another
- one of the pieces constituting the target in various games (as bowling)
- the staff of the flag marking a hole on a golf course
- a peg for regulating the tension of the strings of a musical instrument
- a very thin small pointed metal pin with a head used especially for fastening cloth
- an ornament or emblem fastened to clothing with a pin