Oxford Dictionary English hubcap noun noun BrE BrE//ˈhʌbkæp// ; NAmE NAmE//ˈhʌbkæp// Parts of a car Add to my wordlistjump to other results enlarge image a round metal cover that fits over the hub of a vehicle’s wheel See related entries: Parts of a carSee hubcap in the Oxford Advanced American DictionaryCheck pronunciation: hubcap oxfordlearnersdictionaries.com