An Etymological Dictionary of the German Language/Annotated/Preiselbeere
Preiselbeere, feminine, ‘cranberry,’ Modern High German only; the dialectic variants Preusel-, Praus-, Brausbeere seem to indicate a Middle High German *briuȥelbere; their relation to the equivalent Bohemian brusina, bruslina, Lithuanian brùknė, Lettic brūklene is not quite clear.