abstract:Ogham ( or ; , , Modern Irish or ) is an Early Medieval alphabet used primarily to write the early Irish language (in the so-called "orthodox" inscriptions, 4th to 6th centuries), and later the Old Irish language (so-called scholastic ogham, 6th to 9th centuries). There are roughly 400 surviving orthodox inscriptions on stone monuments throughout Ireland and western Britain; the bulk of them are in the south of Ireland, in Counties Kerry, Cork and Waterford.
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an ancient alphabetical writing system used by the Celts in Britain and Ireland, consisting of straight lines drawn or carved perpendicular to or at an angle to another long straight line 欧甘文字