caraccessory

noun
UK /ˈkɑːr əkˌsesəri/
US /ˈkɑːr əkˌsesəri/

A car accessory is a fun extra thing you can add to a car to make it nicer or more useful.

My dad bought a car accessory, a little mirror, to help him see better when he parks.


OTHER MEANINGS

2. A decorative item added to a car's interior or exterior for style.

She hung a fuzzy dice car accessory from the rearview mirror.

3. A functional device installed in a car to improve comfort or convenience.

A phone holder is a handy car accessory for long drives.

4. An aftermarket product sold separately from the car itself.

The store sells every car accessory from seat covers to roof racks.