Eat away Definition 1 of 3Pro Tip 1/3Physical Damage Often used to describe the damaging effect of something on anything physical, like materials. Salt can eat away at car paint over time. Pro Tip 2/3Gradual Process The damage isn’t sudden but happens continuously over a period of time. Rust slowly began to eat away the old fence. Pro Tip 3/3Destructive Force The phrase emphasizes the relentless and destructive nature of the action. Years of pollution have eaten away the ancient marble statues.