The script is ogham, an early medieval writing system in which letters are represented by groups of notches and lines cut along the edge of a stone, and the text reads LUGUDUC MAQI MAQI-OC, with the final characters lost or damaged. The formula is familiar from hundreds of ogham stones across Ireland: a personal name followed by MAQI, meaning "son of", and then the father's name or lineage. Here the lineage trails off, leaving Luguduc's full ancestry unresolved.

The stone does not stand alone in the landscape. It marks the north-western end of what appears to be a burial, with a second uninscribed stone at the north-eastern corner forming a rough alignment. A third stone once stood at the south-western corner; the antiquarian R.R. Brash noted its stump when he recorded the site in 1879, but it had already disappeared or been removed by the time R.A.S. Macalister catalogued the inscription in 1945. The whole arrangement sits within a burial ground that was already marked on the Ordnance Survey's six-inch map of 1842, itself located inside a wider ecclesiastical enclosure, the kind of roughly circular or oval boundary that often demarcates an early Christian foundation in Ireland. The layering is typical of these places: early church, enclosed ground, named dead, and a script that predates or overlaps with the arrival of Christianity on the island.