It is a bullaun stone, a type of boulder or rock bearing one or more deliberately ground circular hollows, which are found across Ireland and are generally associated with early Christian sites. This one has a single centrally placed hollow, roughly seventeen centimetres in diameter and six centimetres deep. The fact that it ended up as building material in a farm outbuilding is not unusual; carved stones of considerable age were routinely reused in later construction, their original significance either forgotten or quietly set aside in favour of practicality.

What gives this particular stone its context is its proximity to an early ecclesiastical site located approximately 140 metres to the south-southwest. Bullaun stones are frequently found in the vicinity of early church sites and holy wells, and are thought to have served ritual or possibly grinding functions, though their precise original use is still debated. The relationship between the stone and the nearby ecclesiastical site at Ballynoe suggests the bullaun may once have formed part of that religious landscape, before being removed and incorporated into later agricultural structures at some point in the intervening centuries. The exact date of that reuse is unrecorded.