An ancient Celtic feast, usually held on February 1, marked by acts of divination and rites of purification.
[Old Irish : imm, imb-, about, mutually; see ambhi in the Appendix of Indo-European roots + perhaps bolg, bag, sack (a bag symbolizing plenty perhaps having played a role in the festival); see bhelgh- in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
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