Eagle's talon (4)
I believe the answer is:
claw
'eagle's talon' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for claw that I've seen before include "Bird's foot" , "Rake" , "Crab pincer" , "Lobster's grasping structure" , "Scratch - scrape" .)