Well, Christos is a Greek word which ultimately comes from the Indo-European word ghrei, meaning rub.
http://www.bartleby.com/61/roots/IE172.html

According to this review (http://hnn.us/articles/6641.html) of a book putting forward similar ideas to Massey's: KRST is the word for “burial” (“coffin” is written “KRSW”), but there is no evidence whatsoever to link this with the Greek title “Christos” or Hebrew “Mashiah”.



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