Fender/ˈfendər/ Definition 1 of 4Pro Tip 1/3Vehicle Safety The fender helps protect the vehicle and pedestrians from debris on the road. Muddy water splashed high, but the car's fender caught it. Pro Tip 2/3Car Aesthetics Fenders are significant in the overall design and look of the vehicle. The sleek red fender added style to his sports car. Pro Tip 3/3Replacement Costs Fenders are often damaged in minor accidents, and they can be pricey to replace. After the fender-bender, her fender needed replacement.