Definition of air cooler noun from the Oxford Advanced Learner's Dictionary

 

air cooler

 noun
noun
BrE BrE//ˈeə kuːlə(r)//
 
; NAmE NAmE//ˈer kuːlər//
 
 
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a device that reduces the temperature of the air in a room by drawing it in and filtering it through water Air coolers are the ideal solution for the summer. Unlike air coolers that put moisture into the air, air conditioners actually remove moisture. see also air conditioner