Flirt cut by villain with end of weapon – as slash seen? (10)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

DALLY(to flirt/to play with) containing ( cut by ) [ IAGO(a villain in the Shakespearean play, Othello) plus ( with ) last letter of ( end of ) “ weapon ” ]. Defn: How the slash sign/”/” looks/as seen