Coll (letter)Coll is the Irish name of the ninth letter of the Ogham alphabet ᚉ, meaning "hazel-tree", which is related to Welsh collen pl. cyll, and Latin corulus. Its Proto-Indo-European root was *koslo-. Its phonetic value is .BríatharogamIn the medieval kennings, called Bríatharogam or Word Ogham the verses associated with Coll are: caíniu fedaib – "fairest tree" in the Bríatharogam ''Morann mic Moín carae blóesc – "friend of nutshells" in the Bríatharogam Mac ind Óc milsem fedo – "sweetest tree" in the Bríatharogam Con Culainn''.