Poor clarets and red (7)
I believe the answer is:
scarlet
'red' is the definition.
(synonyms)
'poor clarets' is the wordplay.
'poor' indicates an anagram.
'clarets' with letters rearranged gives 'SCARLET'.
'and' acts as a link.
(Other definitions for scarlet that I've seen before include "Cartels (anag.)" , "immoral" , "Crimson" , "Brilliant red colour" , "Red colour of clarets" .)