player (Noun) — A person who participates in or is skilled at some game.
player (Noun) — Someone who plays a musical instrument (as a profession).
player (Noun) — A theatrical performer.
player (Noun) — A person who pursues a number of different social and sexual partners simultaneously.
player (Noun) — An important participant (as in a business deal). ex. "he was a major player in setting up the corporation"