topcoat
US /ˈtɑːp.koʊt/
UK /ˈtɑːp.koʊt/
1.
a lightweight overcoat, typically worn in mild weather.
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He wore a stylish wool topcoat over his suit.
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The detective pulled up the collar of his topcoat against the wind.
2.
a final coat of paint or other protective coating.
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After the primer, apply a durable topcoat for a smooth finish.
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The car received a clear topcoat to protect its paint.