cromlech

noun

1. Synonym of stone circle (“a prehistoric monument consisting of standing stones arranged in a circle”), especially one located in Brittany, France.
2. (UK, Wales)synonym of altar tomb or dolmen (“a prehistoric megalithic tomb consisting of a (somewhat) flat capstone lying horizontally on two or more upright stones”), especially one located in Wales, but also in England (chiefly Cornwall and Devon) or Ireland.

   “The scenes depicted on the emunctory field, showing our ancient duns and raths and cromlechs and grianauns and seats of learning and maledictive stones, are as wonderfully beautiful and the pigments as delicate as when the Sligo illuminators gave free rein to their artistic fantasy long long ago in the time of the Barmecides.”