Definitions for "Cromlech"
A monument of rough stones composed of one or more large ones supported in a horizontal position upon others. They are found chiefly in countries inhabited by the ancient Celts, and are of a period anterior to the introduction of Christianity into these countries.
A circle of menhir, built by the mysterious Ancients and of spiritual importance to the Cûn.
A Welsh dolmen. Literally and paradoxically "a curved flat-rock".