(n) In poker, a deck of cards that a player feels is not yielding an average number of playable hands.
"I'm not sure if it's a cold deck or I suck, but I can't win a hand tonight!"
by Coell May 12, 2005
Card playing term referring to a deck of playing cards that has been tampered with in order to affect the outcome of the game. The term is used because such decks are said to have been found to be cooler (in actual temperature) than the immediate surroundings due to someone introducing them from the outside.
The scumbag has been known to use a cold deck.
by Bro April 19, 2006