mudflap
/ˈmʌdˌflæp/
noun
- A piece of rubber or plastic hanging behind a vehicle's wheel to stop mud, water, or stones from being thrown up.
- He replaced the old mudflap with a new one that had a logo on it.
- Mudflaps are required on large trucks to protect other cars from debris.
- The truck's mudflap was torn off after hitting a pothole.