BILK Meaning of BILK in English v.tr. sl. 1. cheat. 2 give the slip to. 3 avoid paying (a creditor or debt). Derivatives: bilker n. Etymology: orig. uncert., perh. BALK: earliest use (17th c.) in cribbage, spoil one's opponent's score Oxford English vocab. Оксфордский английский словарь. 2012