What is Coat ?
Coat is (noun) 1. a piece of clothing which you wear on top of other clothes when you go outside You’ll need to put your winter coat on – it’s just started to snow. She was wearing a black fur coat. 2. a layer of paint covering something That window frame needs a coat of paint. 3. the fur of an animal The polar bear has a thick coat to withstand cold.(verb) to cover with a layer of something We coated the metal disc with platinum. -coated suffix covered with
source: Easier English, Student Dictionary Upper Intermediate Level