Drusen, plur., an UpG. word for ‘dregs, lees,’ from MidHG. druosene, OHG. truosana (UpG. dialects have ue in the accented syllable); corresponds to Du. droesem, MidDu. droesene, AS. drôsn, ‘dregs.’ The base is perhaps Goth. drôhsnô, to which E. dregs, ModHG. Treber, Trecher are also allied.