Chainsaw/ˈtʃeɪnsɔː/ Definition 1 of 1Pro Tip 1/3Physical Action Chainsaw is used for actions requiring physical effort and outdoors work. She fired up the chainsaw to start clearing the fallen branches. Pro Tip 2/3Safety Gear Using a chainsaw usually involves wearing safety gear to prevent injuries. Before starting the chainsaw, he put on his safety goggles and gloves. Pro Tip 3/3Audible Icon Chainsaw refers to a very loud and recognizable sound; often used metaphorically. The guitarist's chainsaw riffs echoed through the stadium.