coating

a thin layer covering something

• “a second coat of paint”

a decorative texture or appearance of a surface (or the substance that gives it that appearance)

• “the boat had a metallic finish”
• “he applied a coat of a clear finish”
• “when the finish is too thin it is difficult to apply evenly”

a heavy fabric suitable for coats

the work of applying something

• “the doctor prescribed a topical application of iodine”
• “a complete bleach requires several applications”
• “the surface was ready for a coating of paint”