Sentence:  Finally, she showed me the "<WSD>hot saw</WSD>." These are not machines so much as bulky beasts of destruction: souped-up chainsaws with snowmobile or motorcycle engines, some of which run on airplane fuel, that weigh forty to sixty pounds and kick like a rifle when started. 
Meaning of the word marked with <WSD> tags:  A saw with a continuously rotating circular blade; used for cutting trees.