An Etymological Dictionary of the German Language/Zwitlich

by Friedrich Kluge

Zwitlich, Zwilch, m., ‘twilled cloth, tick,’ from the equiv. MidHG. zwilich, zwilch, OHG. zwilîh (hh), m.; properly an adj. used as a subst., from zwilich, ‘twofold, consisting of two threads’ (to this MidHG. zwilchen, ‘to weave with two threads,’ is allied). Formed on the model of Lat. bilix, ‘consisting of two threads’; comp. Drillich.