A prehistoric memorial composed of monoliths encircling a mound.
A dolmen or old underground tomb.
A monument of rough rocks composed of a number of large people supported in a horizontal place upon others. These are generally found mainly in countries populated because of the old Celts, and they are of a period of time anterior into introduction of Christianity into these countries.
In archœol., a structure composed of a large, flat, unhewn rock resting horizontally upon three or maybe more upright stones, of typical occurrence in elements of Great Britain, as in Wales, Devonshire, Cornwall, and Ireland, plus Brittany as well as other components of Europe.
a prehistoric megalithic tomb typically having two large upright rocks and a capstone