Gank

Gank is a term from Player vs. Player MMORPGs, such as Ultima Online and World of Warcraft. It originally came from the phrase "gang kill" and referred to multiple players killing a single player. However, it has evolved to also mean killing a player far less powerful than you or killing a player already fighting a non-player character.

Gank is also slang for stealing something.

Gank is also slang for something of a distasteful or unpleasant nature. Usage "That rotten tree is gank"