[noun] [C]A cooler is a box-like container with a lid, which is used for making or keeping food and drinks cool.We can bring a picnic dinner in the small cooler.A cooler is also a cold drink, usually of wine, fruit juice and fizzy water.a wine coolerCooler bag is US for cool bag.See at cool (COLD).
COOLER
Meaning of COOLER in English
Cambridge English vocab. Кембриджский английский словарь. 2012