What is another word for "engine"?

Roget's Thesaurus (1911) lists these synonyms for "engine": abuse, catch, crack, cut, desecrate, desecration, employ, misapplication, misapply, misappropriate, misappropriation, misemploy, misemployment, misusage, misuse, nut, overtask, overtax, overwork, profanation, profane, prostitute, prostitution, razor, squander, steam, straw, waste, with.