Definitions of coat:

• noun:   growth of hair or wool or fur covering the body of an animal
• noun:   an outer garment that has sleeves and covers the body from shoulder down; worn outdoors
• noun:   a thin layer covering something

  Example: "A second coat of paint"

• verb:   cover or provide with a coat
• verb:   form a coat over

  Example: "Dirt had coated her face"

• verb:   put a coat on; cover the surface of; furnish with a surface

  Example: "Coat the cake with chocolate"