An Etymological Dictionary of the German Language/schröpfen
Appearance
schröpfen, vb., ‘to crop young wheat, tap (trees), cup,’ from the equiv. MidHG. schrępfen, schręffen; comp. AS. scrëpan, ‘to scratch’; also LG. schrappen, prop. an intensive form. The prim. meaning of the Teut. root skrëp is ‘to scratch, cut into’ (to this scharf is allied?). Ital. scaraffare, ‘to snatch away,’ is borrowed from HG.