Guarantee

1. Used in poker when a casino or online poker room puts out a guaranteed prize pool amount for a tournament.

Explained

In order to attract players to play in a specific tournament, a poker room will 'guarantee' a specific prize pool amount. For our example, we will say $10,000 Guaranteed for a $20 poker tournament. That means the entry is $20 and that the prize pool will be $10,000 total amongst all players that enter. It does not mean that the winner of the tournament is guaranteed $10,000 as some people mistakenly assume.