Gank

Gank is a term used in MMOs and multiplayer videogames similar to the word "kill." Players can engage in the act of ganking, whereby they kill other players; they can be ganked where someone kills them (the term is generally not used to describe a kill at the hands of a non-player-character (NPC) that is controlled by the computer or game); and they can describe another as a ganker.

In its early usage the term more specifically described a kill of one player (or a small group of players), by multiple (or a larger group) of oppossing players. Recently gank has been expanded to describe nearly any "player vs. player" kill.