Sword with a blunted tip (4)
I believe the answer is:
epee
'sword with a blunted tip' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for epee that I've seen before include "piece of fencing" , "Pointed weapon" , "Fencing blade" , "Fencer's weapon" , "Narrow fencing sword" .)