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 *kos(e)lo-.
[1] In the medieval kennings, called Bríatharogam or Word Ogham the verses associated with Coll are:
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