An Etymological Dictionary of the German Language/Annotated/Drusen

by Friedrich Kluge

Drusen, plural, an Upper German word for ‘dregs, lees,’ from Middle High German druosene, Old High German truosana (Upper German dialects have ue in the accented syllable); corresponds to Dutch droesem, Middle Dutch droesene, Anglo-Saxon drôsn, ‘dregs.’ The base is perhaps Gothic drôhsnô, to which English dregs, Modern High German Treber, Trecher are also allied.