(slang) To hit someone with a cold cock. / (slang) To hit someone with a club, bottle, or any object that gives additional force to the blow. / (slang) To knock someone unconscious.

(chemistry) A piece of laboratory equipment used for creating a cold spot on a surface. / Used other than figuratively or idiomatically: see cold, finger.

(simile) Very cold.

A hypothetical form of nuclear fusion not requiring the usual immensely high temperatures.

(historical) The period of hostility short of open war between the Soviet Bloc and the Western powers, especially the United States, between 1945 and 1991.

(physiology) A sensory area in the skin that responds to a decrease in temperature.

plural of cold spot

In a cold-hearted manner.

(Australia, New Zealand) potato chips, crisps.

(metallurgy) Any of several plastic deformations of metal (or other material) at relatively low temperatures.