(idiomatic) To risk doing something; to try something risky.

(idiomatic) A possibility that is not likely or probable.

(idiomatic) To immediately accept an offer; to seize an opportunity.

(idiomatic, colloquial, sarcastic) Little or no chance, a low or nonexistent likelihood of occurrence or success.

(games, probability) A game in which the outcome is at least partly determined by random variables rather than strictly by strategy.

(idiomatic, offensive) No chance; zero possibility.

Alternative spelling of off chance

Synonym of snowball's chance in hell

(US, colloquial) A substantial quantity of something.

plural of game of chance