1. kill steal - Noun
2. kill steal - Verb
kill steal (third-person singular simple present kill steals, present participle kill stealing, simple past kill stole, past participle kill stolen)
(online gaming, derogatory) In a multiplayer online game, to deal a finishing blow on an enemy that other player(s) had almost killed, without their consent, so that one gets the credit or rewards instead of them.
kill steal (plural kill steals)
(online gaming, derogatory) A finishing blow of this kind.