An enclosure, in the broadest archaeological sense, is any defined area bounded by an earthwork, wall, or ditch, and such features turn up across Ireland in contexts ranging from early medieval ringforts to prehistoric ceremonial sites. What category this particular example belongs to, and what purpose it once served, remains difficult to say with any confidence from the available record.

Formoyle More sits in the west of County Clare, a part of the country where the landscape carries considerable archaeological density, shaped by thousands of years of farming, settlement, and ritual activity. The townland name itself is anglicised from the Irish, with "more" deriving from "mór", meaning large or great, a common suffix that often distinguishes a principal or larger division of land from a neighbouring smaller one. Beyond the fact of the enclosure's existence and its location within this townland, the documentation currently held in the public domain is sparse, leaving the site's date, dimensions, and structural character unrecorded in any accessible form.