cromlech
noun
[ ˈkrɒmlɛk ]
• (in Wales) a megalithic tomb consisting of a large flat stone laid on upright ones; a dolmen.
• (in Brittany) a circle of standing stones.
Origin:
Welsh, from crom, feminine of crwm ‘arched’ + llech ‘flat stone’; cromlech (sense 2 of the noun) is via French from Breton krommlec'h .
