late med. 'ballock dagger' in the MOL ["ballock-hefted" (i.e. -hafted) is the form in "Piers Plowman"] -- but, "Aha!" I hear you say, "Malc. me ol mate," you say, "forgive me, but this is 1) not Dutch, and 2) not mid-16C " (for you can be irritatingly precise when you've a mind to be) -- "You are right, of course", I say, in an attempt to mollify. "Hang on and I'll find you a mid-16C Dutch one! But are you at least getting the phallic reference?"
Bauernwehr/Lange Messer - Where possesion of double-edged swords was prohibited, singled edged Lange Messer (long knife) Bauernwehr (peasant's weapon) became popular among ordinary citizens for self defense.