A hubcap is a small, round cover that fits on top of an automobile's wheel to protect it from dust, dirt and other road debris. Hubcaps can also serve as decorative elements for vehicles, with many featuring unique designs or logos.
Usage examples
My brother's car lost a hubcap while he was driving on the highway.
I need to replace the missing hubcap on my car before it gets scratched.
The classic car had shiny chrome hubcaps that added to its vintage look.
The mechanic informed me that one of the hubcaps on my car is loose and needs to be tightened.
I spotted a unique hubcap design on a car parked by the sidewalk.