koozie/ˈkuːzi/EtymologyAn alteration of earlier cozy, cosy (“padded or knit covering put on an item to insulate it”), from Scots. This form, with /u/, is perhaps influenced by a blend of cool, kool + cozy.koozie means A thermal insulation sleeve for cans or bottles. Lexicurio rates it Sui generis — a strength score of 92 out of 100.nounA thermal insulation sleeve for cans or bottles.