Winter accessory with excellent hood (8)
I believe the answer is:
scarface
'hood' is the definition.
Both the answer and definition are singular nouns.
Perhaps you can see a link between them that I don't see?
'winter accessory with excellent' is the wordplay.
'winter accessory' becomes 'scarf' (I've seen this in another clue).
'with' means one lot of letters go next to another.
'excellent' becomes 'ace' (ace can informally mean very good).
'scarf'+'ace'='SCARFACE'
Can you help me to learn more?
(Other definitions for scarface that I've seen before include "Al Capone, or Tony Montana - 'Say hello to my little friend'." , "American gangster" , "Al Capone's nickname" , "Film starring Al Pacino" , "US gangster" .)