An Etymological Dictionary of the German Language/Wisch
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Wisch, m., ‘rag, clout, wisp,’ from the equiv. MidHG. wisch, OHG. wisc, m.. to which MidHG. and ModHG. wischen, OHG. wisken, is allied. Comp. OIc. visk, ‘bundle,’ and also E. wisp with a labial instead of a guttural. The base wisku, wisq, wisp, may e connected with Lat. virga (from wízgâ?).