cooler UK /ˈkuː.lə(ɹ)/US /ˈku.lɚ/noun 12forms 1 noun12 •Anything which cools.If acid Things were used only as Coolers, they would not be so proper in this Case. — 1731 •An insulated bin or box used with ice or freezer packs to keep food or beverages cold while picnicking or camping.Two women were found unresponsive in a car along with the likely culprit – four coolers of dry ice – Friday morning in Pierce County, Washington, CNN affiliate KOMO reports. — 2018 •A device for refrigerating dead bodies in a morgue. •(India) Ellipsis of air cooler, evaporative cooler, desert cooler, or swamp cooler. •(Canada, South-Africa) A type of drink made with alcohol, especially wine, mixed with fruit juice.They served wine coolers in the afternoon. •(Philippines) samalamig drink (sweet chilled beverage, such as chilled fruit juice or other flavors like chocolate, coffee, sweet corn, etc., usually mixed with either shredded jelly and/or sago pearls or tapioca pearls) •(US, slang) A prison.About a year or so back we had him in the cooler on a Mann Act rap. — 1939 •A loss suffered while holding a hand which is ordinarily strong, especially one which involves the loss of many chips. •(informal) A cold deck. •(US, slang) A bouncer or doorman. •(slang, no longer used) A final glass of porter after a session drinking spirits and water. •(slang, no longer used) A cooling swim or dip in the water.That night this ungainly urchin, taking a cooler in one of the big irrigation canals, got laid hold of by an alligator and raised the most unearthly screech […] — 1923 formscoolers