(2 syl.). A festival observed in Ireland on June 21st, and in some parts of Scotland on May Day. A fire is kindled on the hills, and the young people dance round it, and feast on cakes made of milk and eggs. It is supposed to be a relic of the worship of Baal. The word is Gaelic, and means Bel's fire; and the cakes are called beltane-cakes.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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