It is a bullaun stone, a type of ancient monument found widely across Ireland, typically consisting of a natural or worked rock with one or more rounded depressions, or basins, hollowed into its surface. These basins were likely used for grinding, ritual water collection, or both, and many bullaun stones retain strong associations with early Christian sites and holy wells. This particular example is modest in size, an oval boulder measuring 0.67 metres by 0.44 metres and standing just 0.33 metres high, with a single basin 0.36 metres across and 0.12 metres deep.

The stone was originally located in the graveyard at Boolnadrum, a site recorded separately in the archaeological inventory for County Wexford. At some point it was removed from that context and relocated to the garden of a house at Ballyboy. That removal is not an unusual fate for smaller bullaun stones, which have sometimes been shifted by landowners, collectors, or simple convenience over the centuries. What makes this example slightly puzzling is a small hole, 4 centimetres by 2 centimetres and only 2 centimetres deep, that has been bored into the exterior of the stone. It does not connect to the basin, which rules out any obvious functional explanation linking the two features. Whether it was drilled to accept a fixing bolt, or serves some other purpose entirely, is not recorded.