<p><strong>Noun</strong></p><ul><li>a container or apparatus, as an insulated chest, in which something may be cooled or kept cool.</li><li>anything that cools or makes cool; refrigerant.</li><li>an air conditioner.</li><li>a tall drink, consisting of liquor, soda, and a fruit garnish.</li><li>water cooler.</li><li>the cooler, Slang: jail: He was in the cooler for three months for petty theft.</li><li>Ice Hockey Slang: penalty box.</li></ul>