An Etymological Dictionary of the German Language, S (1891)
by Friedrich Kluge, translated by John Francis Davis
Steiß
Friedrich Kluge2510186An Etymological Dictionary of the German Language, S — Steiß1891John Francis Davis

Steiß, m., ‘rump, buttocks’ (with MidG. ei instead of eu), from the equiv. MidHG. and OHG. stī̆uz (hence also the early ModHG. variant Steuß), m., corresponding to Du. stuit. It is probably based on a Teut. stī̆wot-, which is primit. allied to Lat. stîva, ‘plough handle.’