Feathered missile (5)
I believe the answer is:
arrow
'feathered missile' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for arrow that I've seen before include "Missile, bolt" , "Missile fired from bow" , "The bowman's missile" , "Quarrel, fired from crossbow" , "Bolt, quarrel" .)