dolmen

noun

Etymology: Borrowed from French dolmen. Perhaps incorrectly fabricated from Breton taol maen (taol (“table”) + maen (“stone”)) (the correct compound would be *taolvaen, not **daolmaen). An alternative theory states the French term derives instead from Cornish tolmen, from toll (“hole”) + men (“stone”); compare the name of the Cornish standing stones Men an Toll. See also menhir.

1. A prehistoric megalithic tomb consisting of a capstone supported by two or more upright stones, most having originally been covered with earth or smaller stones to form a barrow.
2. Any megalithic tomb, including passage graves and wedge tombs.