Home›Browse›H›heat gunheat gunOur editors are putting together more complete content — check back in about 20 minutesheat gunheat gun — nounnoun1. a tool that blows out hot air, used for removing paint or shrinking plastic1.nounDefinitiona tool that blows out hot air, used for removing paint or shrinking plasticExampleHe used a heat gun to peel off the old wallpaper.