Ogham is an early medieval Irish script in which letters are represented by groups of notches and strokes cut along the edge of a stone, read from the bottom upward. This particular stone, just 0.7 metres tall and roughly 26 by 19 centimetres at its base, bears its inscription along both worn edges, meaning whoever commissioned it used every available surface to set down a name.

The scholar R.A.S. Macalister read the inscription in 1945 as MOCURRUTI MAQI VLISACESUCMIR, a formula typical of early ogham stones in which "MAQI" means "son of" in Old Irish, giving us something like "Mocurruti, son of Vlisacesucmir". These names belong to a period, broadly the fifth to seventh centuries, when such stones were raised across Munster as memorial or territorial markers, recording lineage in a script derived, perhaps unexpectedly, from the Latin alphabet. The stone sits 3.5 metres to the north-east of a cross-slab, suggesting this corner of Teeromoyle once held some significance as a gathering of early Christian or pre-Christian monuments. Not all of the text is still recoverable. The first four letters of the opening word are clearly legible, but the double R that follows is damaged, and the characters after it can no longer be readily deciphered. On the other face, the first four letters of the second part of the inscription have been lost entirely beneath the soil, and even Macalister noted that what he transcribed as an E was represented by only two vowel notches, spaced further apart than expected, leaving a small ambiguity at the heart of a name that was presumably, once, quite precisely known.