A chance to win something at no risk or cost. In poker, the term has two common applications.

A "freeroll" can refer to a hand in which two players are all in and currently tied for the pot, yet one has a chance to outdraw the other. For example, Player A has {A-Spades}{K-Spades} and Player B {A-Diamonds}{K-Hearts} and go all in after a flop of {K-Diamonds}{8-Spades}{3-Spades}. Both have top pair of kings with the same ace-kicker, but Player A can still draw a spade to make a flush and win the hand. Thus is Player A said to be on a "freeroll" versus Player B.

A "freeroll" can also refer to a tournament with no buy-in yet with some sort of reward, including cash.