1. a lightweight overcoat worn over other clothing
2. a final layer of paint, varnish, or other coating applied over a base coat
Usage: technical

Examples

• He wore a wool topcoat over his business suit.
• The rain soaked through her thin topcoat.
• She hung her topcoat in the closet when she arrived.
• The painter applied the topcoat after the primer dried.
• This topcoat will protect the wood from moisture.
• The car’s topcoat gives it a glossy finish.