The term “cooler” refers to being dealt a really strong hand in poker only to be up against an opponent with a monster hand even better than yours. Usually, there’s no way you’ll be able to avoid getting far from the hand in situations like these and will have to pay your opponent.

A pairing card on the board that greatly devalues your hand. If you have got a pair of 3’s in your hand, and the flop is King-King-8, the turn is a 2 and now the river card is 8, here you have been “counterfeited.” You had two pairs, but now the board has a better two pair. so any player with a card higher than a 6 in his hand now beats you.

To pass the act of betting to the next player. If there is no action yet you cannot call anything but you can pass the action to the next player. If you do not want to bet, you will have the option to just “check.” If that is followed by subsequent action from your fellow players within the betting round, then the action will return to you and you can either call, fold or raise.