Lisgurreen carries within it the Irish word "lios", one of the most common terms for a ringfort, those circular earthwork enclosures that once numbered in their tens of thousands across Ireland. That a place should be named after its fort, and that the fort should still be formally recorded centuries later, speaks to how deeply these structures embedded themselves into the landscape and the memory of the people who farmed around them.

Ringforts, known variously as raths, lioses, or cahers depending on their construction and regional tradition, were the dominant form of rural settlement in early medieval Ireland, roughly from the fifth to the twelfth centuries. Most were farmsteads, defined by a circular bank and ditch enclosing a family's living quarters and providing a degree of security for livestock. The rath at Lisgurreen in County Clare belongs to this broad tradition. Clare itself is particularly dense with such monuments, the limestone landscape of the Burren to the north preserving stone-built examples with unusual clarity, while earthen examples like this one survive more quietly in the agricultural midlands of the county.

The "gurreen" element of the townland name is likely derived from the Irish "goirín" or a related diminutive form, sometimes interpreted as a small tilled field or garden plot, which would place this site within the ordinary working rhythms of an early medieval farmstead rather than any grander ceremonial context. That combination, a lios and its associated cultivated ground, preserved together in a single place name, offers a small but vivid glimpse into how people organised their lives around these enclosures long before the landscape was redrawn by later centuries of change.