Country wintry, by the sound of it (5)
I believe the answer is:
chile
'country' is the definition.
(Chile is an example)
'wintry by the sound of it' is the wordplay.
'wintry' becomes 'chilly'.
'by the sound of it' shows a homophone (sound like).
'chilly' is a homophone of 'CHILE'.
(Other definitions for chile that I've seen before include "Country liberated by Bernardo O'Higgins" , "Long, thin country" , "S American country, capital Santiago 95)" , "Country of S. America" , "Long narrow country" .)