A cold contract usually means that a contract, which makes on most reasonable lines, as the cards lie. You hear people say, "He managed to find a line to go down in a cold contract".
(Note: the meaning could slightly differ based on region etc).
I am curious, how this term came into being. There is a past BBO forums thread: http://www.bridgebase.com/forums/topic/43444-what-is-a-cold-contract/ but that does not seem to help.
Does anyone know the origin of this term?