Beltane
Pronunciation : Bel"tane
Part of Speech : n.
Etymology : [Gael. bealltainn, bealltuinn.]
Definition : 1. The first day of May (Old Style). The quarter-days anciently in Scotland were Hallowmas, Candlemas, Beltane, and Lammas. New English Dict.
2. A festival of the heathen Celts on the first day of May, in the observance of which great bonfires were kindled. It still exists in a modified form in some parts of Scotland and Ireland.
Source : Webster's Unabridged Dictionary, 1913