Crom"lech (kr&obreve;m"l&ebreve;k), n. [W. cromlech; crom bending or bent, concave + llech a flat stone; akin to Ir. cromleac.] (Archæol.) 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 dolmen or ancient underground tomb
       *1922: 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. — James Joyce, Ulysses