Fencing weapon (4)
(Other definitions for epee that I've seen before include "Rapier" , "Fencing blade" , "Bit of fencing" , "Duelling blade" , "Type of sword" .)
'fencing weapon' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for foil that I've seen before include "Queer" , "Check" , "metal used in > sword" , "Baffle" , "Hinder - prevent" .)