Walpurgis
Walpurgis Night
(vælˈpʊəɡɪs
) noun
the eve of May 1, believed in German folklore to be the night of a witches' sabbath on the Brocken, in the Harz Mountains
[C19: translation of German Walpurgisnacht, the eve of the feast day of St Walpurga, 8th-century abbess in Germany]
