Silly! Silly about Dahl’s initial poems (6)
I believe the answer is:
idylls
'poems' is the definition.
(I have seen 'Pastoral poems ' mean 'idylls' so perhaps 'poems' could also mean 'idylls')
'silly silly about dahl's initial' is the wordplay.
'silly' is an anagram indicator.
'about' is an insertion indicator.
'initial' says to take the initial letters.
The initial letter of 'dahl' is 'd'.
'silly' anagrammed gives 'iylls'.
'iylls' placed around 'd' is 'IDYLLS'.
(Other definitions for idylls that I've seen before include "Pastoral pieces" , "Pleasant or romantic scenes from country life" , "stories of happy innocence" , "- - of the King (Tennyson)" , "Episodes of pastoral or romantic charm" .)