From Longman Dictionary of Contemporary Englishwet barˈwet bar noun [countable] American EnglishDHHDFD a small bar with equipment for making alcoholic drinks, in a house, hotel room etc
Examples from the Corpus
wet bar• An outdoor terraced patio with additional seating and wet bar will provide a suitable dining alternative once the weather turns warmer.• There was a very well-stocked wet bar in one corner, another giant television and video deck in the other. 