overcoat Syllabification: (o·ver·coat)Pronunciation: /ˈōvərˌkōt/Translate overcoat | into French | into German | into Italian | into Spanish Definition of overcoat noun 1a long warm coat worn over other clothing. 2a top, final layer of paint or a similar covering. overcoat in other Oxford dictionaries Definition of overcoat in the British & World English dictionary