Luis (letter)

	Aicme Beithe		Aicme Muine
ᚁ	Beith	ᚋ	Muin
ᚂ	Luis	ᚌ	Gort
ᚃ	Fearn	ᚍ	nGéadal
ᚄ	Sail	ᚎ	Straif
ᚅ	Nion	ᚏ	Ruis
	Aicme hÚatha		Aicme Ailme
ᚆ	Uath	ᚐ	Ailm
ᚇ	Dair	ᚑ	Onn
ᚈ	Tinne	ᚒ	Úr
ᚉ	Coll	ᚓ	Eadhadh
ᚊ	Ceirt	ᚔ	Iodhadh
	Forfeda
ᚕ	Éabhadh
ᚖ	Ór
ᚗ	Uilleann
ᚘ	Ifín	ᚚ	Peith
ᚙ	Eamhancholl

Luis (ᚂ) is the second letter of the Ogham alphabet, derived either from luise "flame" or from lus "herb". Its Proto-Indo-European root was either *leuk- 'to shine' or *leudh- 'to grow'. Its phonetic value is [l].

The Auraicept na n-Éces glosses the name as cairtheand "mountain-ash", i.e. "rowan" (Modern Irish caorthann). The associated verse is : Li sula "lustre of eye" The Auraincept interprets this as "delightful to the eye is luis, i.e. rowan, owing to the beauty of its berries".

In the medieval kennings, called Bríatharogam or Word Ogham the verses associated with Luis are:

lí súla - "lustre of the eye" in the Word Ogham of Morann mic Moín

carae cethrae - "friend of cattle" in the Word Ogham of Mac ind Óc

lúth cethrae - "sustenance of cattle" in the Word Ogham of Culainn.

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