Bird of prey's claw (5)
I believe the answer is:
talon
'bird of prey's claw' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for talon that I've seen before include "Claw; undealt cards" , "The stock" , "E.g. hawk's claw" , "ogee moulding" , "Eagle claw" .)