| a megalithic tomb of the Neolithic and Copper or early Bronze ages found in the British Isles and Europe, consisting of a roofed burial chamber and narrow entrance passage covered by a round mound and containing human remains and funerary offerings. |
| passage grave n. A Neolithic tomb consisting of a passageway and burial chamber made of large upright stones capped with other large stones, originally buried in an earthen mound. |