[ koo-ler ]
See synonyms for cooler on
  1. a container or apparatus, as an insulated chest, in which something may be cooled or kept cool.

  2. anything that cools or makes cool; refrigerant.

  1. an air conditioner.

  2. a tall drink, consisting of liquor, soda, and a fruit garnish.

  3. the cooler, Slang. jail: He was in the cooler for three months for petty theft.

  4. Ice Hockey Slang. penalty box.

Origin of cooler

First recorded in 1565–75; cool + -er1

Words Nearby cooler Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use cooler in a sentence

British Dictionary definitions for cooler


/ (ˈkuːlə) /

  1. a container, vessel, or apparatus for cooling, such as a heat exchanger

  2. a slang word for prison

  1. a drink consisting of wine, fruit juice, and carbonated water

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012