bach I. \ˈbach\noun (-es) Etymology: by shortening slang: bachelor II. intransitive verb alsobatch\“\ (-ed/-ing/-es) slang: to live as a bachelor; especially: to keep house in the absence of a wife — often used with it < while their wives were away the two men bached it in a cabin by a lake and fished > III. noun (-es) Etymology: probably from bach (I) New Zealand: a small house or weekend cottage