Be marked, cut by one Bavarian with sword (8)
I believe the answer is:
scimitar
'sword' is the definition.
(scimitar is a kind of sword)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for scimitar that I've seen before include "I'm racist, owning an oriental sword" , "Double-edged sword" , "one that is very sharp" , "sharp weapon" , "Eastern sword" .)