Religioustolerance.org: "McBain's Etymological Dictionary of the Gaelic Language says that 'samhuinn' (the Scots Gaelic spelling) means 'summer's end'..."
Later it the website also says: "The Scottish Gaelis Dictionary similarly defines Samhain as: 'Hallowtide. The Feast of All Soula.
Sam + Fuin = end of summer.'"
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http://www.religioustolerance.org/hallo_sa.htm]