Page "Freeroll" Paragraph 1

In playing a particular hand of poker, a freeroll is a situation that arises ( usually when only two players remain ) before the last card has been dealt, in which one player is guaranteed to at least split the pot with his opponent no matter what the final cards are, but where there is some chance he can win the whole pot if certain final cards are dealt.

This most commonly occurs in a high-low split game where one player knows that he has a guaranteed low hand made, his opponent cannot make a better low no matter what the last card is, but the player who is low might possibly catch a lucky card that gives him a straight or flush, winning high as well.