Fight with chestnut stakes? (5)
I believe the answer is:
fence
'fight' is the definition.
(fencing is a kind of fighting)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for fence that I've seen before include "who deals in hot stuff" , "Barrier - engage in swordplay" , "Barrier that serves to enclose an area" , "With blade, fight" , "feature in horse-racing?" .)