A topcoat is a coat that you wear over your other clothes.
2. variable noun
A topcoat is the final layer of paint or varnish that is put on something. Topcoat is the type of paint or varnish that you use for the final layer. Compare undercoat.
topcoat in British English
(ˈtɒpˌkəʊt)
noun
an outdoor coat worn over a suit, etc
topcoat in American English
(ˈtɑpˌkoʊt)
US
noun
a lightweight overcoat
Examples of 'topcoat' in a sentence
topcoat
Kelly's topcoat lay on the couch, added to the blanket he had used to cover himself through the night.
Wood, Ted SNOWJOB (1989)
The man in the doorway wore a dark topcoat over a grey suit.
Thomas, Craig THE LAST RAVEN (1989)
He'd managed to get his outer garments on this time: a sedate black homburg, a black cashmere topcoat, and the de rigueur white silk scarf.