No-Limit
No-limit is a betting structure where the size of the bets is limited only by the size of the betting player's stack. Any time it is his turn to bet, a player may wager as much as he likes up to betting his whole stack, which is called going all-in.
So possible bet sizes are bound above by the stack of the current player and usually below by the size of the last bet or raise.
Related Topics:
Pot Limit, Fixed Limit, All-In