From Longman Dictionary of Contemporary Englishhacksawhack‧saw /ˈhæksɔː $ -sɒː/ noun [countable] TZa cutting tool with small teeth on its blade, used especially for cutting metal
Examples from the Corpus
hacksaw• The couple turned up at Richmond station and a firemen cut them free with a hacksaw.• The aluminium tube is then cut to length as required with a hacksaw.• Lead pipes are easy to cut through with a hacksaw.• He sat down at the kitchen table and picked up the hacksaw.• The former soldier grew even angrier when he tried to cut through the metal with the hacksaw but failed.• To accommodate it on the upflow tube we've had to trim off another inch or so of piping with the hacksaw. 