Main Entry: Wal·pur·gis Night

Pronunciation: \väl-ˈpu̇r-gəs-\

Function: noun

Etymology: part translation of German Walpurgisnacht, from Walpurgis St. Walburga dieda.d. 779 English saint whose feast day falls on May Day + German Nacht night

Date: 1823

1 : the eve of May Day on which witches are held to ride to an appointed rendezvous
2 : something (as an event or situation) having a nightmarish quality