Fought with swords (6)
I believe the answer is:
fenced
'fought with swords' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for fenced that I've seen before include "Enclosed by a barrier of wood or wire" , "Enclosed with palings" , "Fought with sword" , "Enclosed with a palisade" , "Ringed in as with bushes" .)