An Etymological Dictionary of the German Language/Annotated/Zwitlich

by Friedrich Kluge

Zwitlich, Zwilch, masculine, ‘twilled cloth, tick,’ from the equivalent Middle High German zwilich, zwilch, Old High German zwilîh (hh), masculine; properly an adjective used as a substantive, from zwilich, ‘twofold, consisting of two threads’ (to this Middle High German zwilchen, ‘to weave with two threads,’ is allied). Formed on the model of Latin bilix, ‘consisting of two threads’; compare Drillich.