From Longman Dictionary of Contemporary Englishtopcoattop‧coat /ˈtɒpkəʊt $ ˈtɑːpkoʊt/ noun 1 [countable, uncountable]TBC the last layer of paint that you put on a surface2 [countable] old-fashionedDCC a warm long coat SYN overcoat
Examples from the Corpus
topcoat• So he went one year at Easter time and got himself all outfitted in a new suit and hat and topcoat.• The man has dark hair and wears a brown topcoat.• The breadhead in the brown topcoat now holds a pistol in his hand.• Fenn stood in the graveyard, hands in his topcoat pockets, and waited for the priest to join him.• The guard hairs form the protective topcoat. 