In the
Diablo computer game series by
Blizzard, a portion of the
reward received when killing another player's character. Depending on the game, it may be accompanied by other items and/or a calculated amount of gold, dropped from the deceased character's inventory.
From an ear, the killed character's name and level (at the time of their death) can be determined.
Useful primarily for bounty hunting, ears are a means of proof that a character has been killed.