Bird with a powerful kick (7)
I believe the answer is:
ostrich
'bird with a powerful kick' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ostrich that I've seen before include "Emu-like bird" , "To Chris (anag)" , "Bird burying its head in the sand" , "with a big nest egg" , "Nut-burying type" .)