I wondered about bedcover (9)
I believe the answer is:
eiderdown
'bedcover' is the definition.
(I've seen this before)
'i wondered about' is the wordplay.
'about' indicates anagramming the letters.
'i'+'wondered'='iwondered'
'iwondered' anagrammed gives 'EIDERDOWN'.
(Other definitions for eiderdown that I've seen before include "I wondered about this warm bed covering" , "cover when retired" , "What might keep one warm" , "Warm bed cover" , "what may be on tonight" .)