Schedelhau

German (“scalp cut”, “crown-cut”, or “skull cut” or the “parting strike” or "vertex strike") Liechtenauer’s short, quick, high horizontal blow at the opponent’s forehead. Also a vertical downward cut, from either side, and aimed literally at the crown of the head. A vertical Oberhau. One of the Meisterhau. Also called Schaytler, Scheytelhau, or Schaittelhaw. It may be called the “parting” strike because it is delivered as you pass back away from the opponent and the blades momentarily engage. According to Meyer, a vertical downwards cut with the true edge, also called an Oberhaw (“over blow” or “high blow”). Schaitler = Apex

a vertical cut, delivered either Oberhau (above the waist) or Unterhau (below the waist)