Lee for one revealed by vine-rot (7)
I believe the answer is:
trevino
'lee' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?
'one revealed by vine-rot' is the wordplay.
'one revealed' indicates an anagram.
'by' is a charade indicator (letters next to each other).
'vine' put after 'rot' is 'rotvine'.
'rotvine' with letters rearranged gives 'TREVINO'.
'for' is the link.
Can you help me to learn more?
(Other definitions for trevino that I've seen before include "Lee -, US golfer" , "Old golfer" .)