TOPCOAT

greatcoat, overcoat, topcoat

(noun) a heavy coat worn over clothes in winter

Source: WordNet® 3.1

Etymology

Noun

topcoat (plural topcoats)

A light overcoat.

A layer of paint or varnish etc. applied after the undercoat.

Verb

topcoat (third-person singular simple present topcoats, present participle topcoating, simple past and past participle topcoated)

(transitive) To apply a topcoat to.

Source: Wiktionary

Top"coat`, n.

Definition: An outer coat; an overcoat.

Source: Webster’s Unabridged Dictionary 1913 Edition