Retort about lumbago? (8)
I believe the answer is:
backchat
This clue could be a double definition.
'retort' is the first definition.
(I have seen 'Impudent retort' mean 'backchat' so perhaps 'retort' could also mean 'backchat')
'lumbago?' is the second definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'about' acts as a link.
Can you help me to learn more?
(Other definitions for backchat that I've seen before include "Effrontery" , "cheeky retorts" , "Cheeky words in response to rebuke" , "Impudent talk" , "Impudent rejoinder" .)