An Etymological Dictionary of the German Language/Annotated/Pfropfen

by Friedrich Kluge

Pfropfen, masculine, ‘stopper, cork’ (first recorded in the last century); its form is based on the equivalent Low German propp, Dutch prop, ‘plug, cork, stopper’; allied to English prop. The cognates cannot be derived from Latin proponere; they are more probably connected with the following group of words.