In Irish, it derives from "cill", meaning a church or monastic cell, combined with a form suggesting stones or stepping stones, and that combination points toward an early ecclesiastical presence in this corner of County Galway that predates any surviving written account. An ecclesiastical enclosure of this type would originally have defined the sacred boundary of an early Christian foundation, typically a roughly circular or oval earthwork enclosing a church, burial ground, and the domestic buildings of a small monastic community. The enclosure itself was the territorial and spiritual statement, marking off consecrated ground from the ordinary landscape around it.

Sites of this kind belong to the flowering of early Irish Christianity, roughly between the sixth and twelfth centuries, when the Irish church organised itself around monastic rather than episcopal structures. Hundreds of these enclosures survive across the country, many reduced to a faint arc in a field boundary or a slight rise in the ground, their original timber or earthen banks long since robbed out or ploughed down. The name Kilcloghans suggests the site was associated with a community significant enough to leave its mark on local topography and memory, even if the physical remains are now modest. What survives at ground level, and how legible the enclosure remains in the present landscape, is not currently documented in available public records.