Eagle's weapon (5)
I believe the answer is:
talon
'eagle's weapon' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for talon that I've seen before include "one that grips" , "Prey-bird's claw" , "Tonal (anag.)" , "Eg, an eagle's claw" , "Raptor's claw" .)