Foil is pointed stick for sport (5)
I believe the answer is:
stump
'foil' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for stump that I've seen before include "Remains of felled tree" , "Projecting remnant" , "A single wicket" , "defeat" , "Fox" .)