player

One that plays, especially.

One who participates in a game or sport.

A gambler.

One who performs in theatrical roles.

One who plays a musical instrument.

An active participant.

The mechanism actuating a player piano.

A device that plays or controls the playing of audio or video recordings.

One who actively seeks out sexual partners and carries on a number of sexual affairs at the same time.

In harness-manuf., a small piece of metal attached by links to the mouthpiece of the bridle.