Demons of limp stature (4)
I believe the answer is:
imps
'demons' is the definition.
(I've seen this before)
'of limp stature' is the wordplay.
'of' indicates the answer is hidden within the clue.
'IMPS' is hidden within 'limp stature'.
(Other definitions for imps that I've seen before include "Children causing trouble" , "Little rascals" , "naughty children" , "repairs (for a wing)" , "Mischievous fairies" .)