An Etymological Dictionary of the German Language/Streifen
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Streifen, m., ‘stripe, streak,’ from late MidHG. streif, m., ‘expedition,’ allied to MidHG. streifen (streipfen), wk. vb., ‘to glide, march, roam’; comp. Du. strippen, ‘to strip off leaves’ (streep, ‘stripe, streak, stroke’). Further cognates are wanting.