Jammer

Meanings

1. A player of the massively multiplayer online game Animal Jam (now either the app so named, formerly Animal Jam – Play Wild!, or the desktop game renamed Animal Jam Classic).

1. Any device used to jam radio reception.
2. A musician who jams.
3. 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.
4. A player who attempts to score points by making their way past other players.

Etymology

From jam + -er.