Cooler

• cool‧er [countable]
• 1 a container in which something, especially drinks, is cooled or kept cold:
• Mike went to fetch a bottle of wine from the cooler.
• 2 American English a coolbox
• 3 American English a machine that provides air conditioning
• 4

  the cooler

  informal prison

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.