jammer

noun

1. 1.Any device used to jam radio reception.
2. 2.A form of swimwear used by athletes.
3. 3.A musician who jams.
4. 4.A device (e.g. a jumar) which will slide along a rope in one direction but not the other, used in rock-climbing, caving etc.
5. 5.A player who attempts to score points by making their way past other players.