coat

noun

1. a sleeved outer garment opening down the front and varying in length, as a suit jacket or a topcoat or overcoat
2. a natural outer covering of an animal, as of fur or wool
3. the outer covering of a plant or animal structure, tissue, etc.: a seed coat
4. a layer of some substance, as paint, over a surface
5. Dialectal a petticoat or skirt
6. Obsolete customary garb of a profession or class

transitive verb

1. to provide or cover with a coat
2. to cover with a layer of something