Cold contract in bridge
Official Encyclopedia of Bridge, 6th Edition (2001) lists:


  Cold contract: Bridge slang for an easily makeable contract.


Merriam Webster's Collegiate Dictionary, 8th Edition (c 1980) lists as sense 5 b:


  Cold: certain, sure viz The actors knew their lines cold a week before opening.


OED Compact Edition (1928) does not list any comparable sense for the word cold.