topcoat

/ˈtɑpˌkoʊt/
noun
  1. An overcoat; a heavy coat worn over other clothing for warmth or protection.
    • She hung her topcoat in the closet by the door.
    • He buttoned his wool topcoat before stepping out into the snow.
    • The detective wore a long gray topcoat and a fedora.
  2. A final layer of paint, varnish, or other finish applied over a primer or base coat.
    • Use a clear topcoat to protect the nail polish from chipping.
    • After the primer dried, she applied a glossy topcoat to the table.
    • The car's topcoat gave it a shiny, professional look.
Antonyms
verb
  1. To apply a final layer of paint, varnish, or other finish to a surface.
    • We need to topcoat the walls after the primer is fully dry.
    • He carefully topcoated the wooden cabinet with a satin finish.
    • Make sure to topcoat the metal parts to prevent rust.