Meaning of “coat” - Learner’s Dictionary

coat

noun [ C ] us uk /kəʊt/
CLOTHES

A1 a piece of clothing with sleeves that you wear over your other clothes, especially when you go outside:

a fur/winter coat

More examples

FUR

the fur that covers an animal's body

LAYER

a layer of a substance such as paint:

a coat of paint/varnish

(Definition of “coat noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)