hacksawPronunciation: /ˈhaksɔː/Translate hacksaw | into German | into Italian | into Spanish Definition of hacksaw noun a saw with a narrow fine-toothed blade set in a frame, used especially for cutting metal. verb (past participle hacksawn or hacksawed) [with object] cut (something) using a hacksaw: the bolt has now been hacksawed throughhacksaw in other Oxford dictionaries Definition of hacksaw in the US English dictionary