Taxi to take sweetheart's inactive fellow? (7)
I believe the answer is:
cabbage
'inactive fellow?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'taxi to take sweetheart's' is the wordplay.
'taxi' becomes 'cab' (synonyms).
'to take' becomes 'bag' (bagging is a kind of taking).
'sweetheart' becomes 'e' (the heart/centre of 'sweet').
'cab'+'bag'+'e'='CABBAGE'
Can you help me to learn more?
(Other definitions for cabbage that I've seen before include "Savoy vegetable" , "Vegetable plant" , "Beg a cab for the strange vegetable" , "Green vegetable" , "Variety of brassica" .)