Green’s Dictionary of Slang

chilled-off adj.

[chill v.2 (5)]

(US) killed, murdered.

robartin ‘User Rev. of Family Business’ at BoardGameGeek.com 🌐 A Mob War lasts until the hit list is empty – and during a mob war, each turn results in the first mobster being chilled off. The winner of the game is the last man standing – ie the last player to have mobster cards left.