Surrenders primitive weapons (4)
I believe the answer is:
bows
I believe this is a double definition.
'surrenders' is the first definition.
(bow can mean to surrender or give in)
'primitive weapons' is the second definition.
(as in a bow and arrow)
(Other definitions for bows that I've seen before include "Acknowledges applause as actor does" , "Bends, defers" , "Looped knots of ribbons - fiddlesticks!" , "some people play with" , "Bends from the waist deferentially" .)