Country coat is brown (11)
I believe the answer is:
afghanistan
'country' is the definition.
(Afghanistan is an example)
'coat is brown' is the wordplay.
'coat' becomes 'afghan' (afghan is a kind of coat**).
'brown' becomes 'tan' (tan is a kind of brown).
'afghan'+'is'+'tan'='AFGHANISTAN'
(Other definitions for afghanistan that I've seen before include "republic" , "Landlocked Asian country" , "This type of country" , "Country with capital Kabul" , "dangerous country" .)