Poetry from Lear: rubbish (8)
I believe the answer is:
nonsense
'rubbish' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for nonsense that I've seen before include "Foolish words or ideas" , "Rubbish; absurdity" , "Gobbledegook" , "rhubarb" , "Rubbish, twaddle" .)