well, i dont know for sure..we call it "nargile" in turkish and the word i've found in the dict for english is water pipe. however, i remember it being called "hooker" as well by native english speakers.

ps: we dont smoke "grass" or "hashish" through the hookers as many think we do. it's just tobacco enriched with some fruit essences like apple for instance. so it's no worse than just cigarette