Finish, with "up"
I believe the answer is:
sew
'finish with up' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sew that I've seen before include "Make stitches" , "Use a needle and thread" , "Fasten with stitches" , "Stitch with needle and thread" , "Fasten with needle and thread" .)