An Etymological Dictionary of the German Language/Annotated/Scholle
Scholle (1.), feminine, ‘clod, floe,’ from the equivalent Middle High German scholle, masculine, Old High German scolla, feminine, scollo, masculine; compare Dutch schol, ‘clod, floe’; properly a participle of the root skel, ‘that which is split,’ and is therefore allied to Schale, and with Gothic skilja, ‘butcher,’ Old Icelandic skilja, ‘to divide, separate’;. also with Old Saxon scola, Anglo-Saxon sčęŏlu (equivalent to English shoal).
Scholle (2.), feminine, ‘plaice, sole,’ Modern High German only, formed from Low German; compare the equivalent Dutch schol.