Definitions for "Check raise"
Keywords:  raise, frown, holdem, bet, bluff
A player with a strong hand may decide to act weak by checking during a betting round in hopes that an opposing player will bet. This will then give the player who checked a chance to the re-raise the opposing player and thus get more money in the pot.
To check first, then to raise should anyone else bet.
ToCheck and then raise in a betting round.
a strong indicator that one, he has hit a big hand and two, that he can beat whatever your holding
a very strong play, so when it happens to you, you need to back up and rethink
a very effective technique for winning a pot and eventually the game though