What does mudguard mean?
A mudguard is a guard fitted over a vehicle's wheel to intercept mud, water, and other debris thrown up from the road. On bicycles, it commonly takes the form of a narrow curved strip above the tyre, while on motorcycles it may be a broader panel that follows the wheel's shape. The term is especially established in British English; American speakers more often use fender for the general bodywork or panel above a wheel, although mudguard is still used in some contexts. Mudguards are practical rather than decorative, protecting the rider, the vehicle, and nearby people from road spray. The related term mudflap usually denotes a flexible strip or flap attached behind a wheel, whereas mudguard can refer to a more fully formed rigid or semi-rigid covering. In everyday use, the word most often appears in the established combinations rear mudguard and front mudguard, especially in relation to bicycles and motorcycles.
nounA strip or panel attached over a vehicle's wheel to reduce the spray of mud and water. The term is also used for the enclosing mudguard on a motorcycle.
- A strip or panel fitted over the wheel of a bicycle, car, or other vehicle to limit the spray of mud and water.
- A broad, usually curved guard enclosing the rear wheel of a motorcycle.
"Rain darkened the rear mudguard of her bicycle as she hurried home."
"He reached down to scrape dried mud from the bicycle's rear mudguard."
"The touring motorcycle's mudguard was fitted with a small inspection light."
The plural is formed by adding -s to the compound noun.
"Mudguards covered the wheels of the old truck."
A mudguard turns a spinning wheel into a shield: the mud still flies, but most of it never reaches the rider.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mudguard come from?
Mudguard is a compound formed in the 19th century from mud and guard. Both elements are of Germanic origin: mud has Old English roots, while guard comes through Old French from a Germanic word meaning to protect or defend. The compound was originally associated chiefly with vehicles and their wheels.
Related word forms
How mudguard is actually used
The word is especially common in British English. In American English, fender is the usual general term, although mudguard remains understandable and is used in some motorcycle contexts. Mudflap generally refers specifically to a flexible flap hung behind a wheel rather than a rigid guard.
Easily confused with mudguard
A mudguard is a component intended to block mud and water thrown up by a wheel, whereas a fender is the broader American term for the bodywork or panel above and around a vehicle's wheel.