Original: A dolmen (also known as cromlech (Welsh), anta, Hünengrab, Hunebed, Goindol, quoit, and portal dolmen) is a type of single-chamber megalithic tomb, usually consisting of three or more upright stones supporting a large flat horizontal capstone (table).
Simplified: A dolmen (also known as cromlech, anta, Hünengrab, Hunebed, quoit, and portal dolmen) is a type of single-chamber megalithic tomb. It usually consists of three or more upright stones (megaliths) supporting a large flat horizontal capstone (table).