Old busybody, left-winger, holding text for you (5)
I believe the answer is:
trout
'old busybody' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'left-winger holding text for you' is the wordplay.
I cannot quite understand how this works, but
'you' could be 'u' (homophones) and 'u' is found within the answer.
'left-winger' could be 'trot' (short for Trotskyite) and 'trot' is located in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for trout that I've seen before include "Food fish" , "one often tickled?" , "grumpy old woman" , "Unattractive old woman" , "Performance by five players" .)