BULRUSH Meaning of BULRUSH in English bul ‧ rush /ˈbʊlrʌʃ/ BrE AmE noun [countable] [ Date: 1400-1500 ; Origin: Probably from bull + rush ] a tall plant that looks like grass and grows by water Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012