(noun)
a device consisting of a metal frame that is fixed at the front of vehicles such as streetcars/trams and locomotives, meant for pushing people, animals, and objects out of the way in case of a collision to reduce injury and damage;
e.g. The train stopped just as its fender touched the obstacle on the tracks.
(noun)
some object such as a tire or a cylinder made of plastic, foam, or rubber, fitted onto the side of a boat or a dock in order to cushion it and prevent damages due to collision;
e.g. The fender at the side of the boat bumped against the dock.
(noun)
a low screen or frame made of metal that is fitted in front of an open fireplace to prevent burning fuel from falling out;
e.g. Be careful around the fireplace, because the fender is very hot.