n. 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.
the GNU version of the Collaborative International Dictionary of English
n. A cromlech. See cromlech.
The Century Dictionary and Cyclopedia
n. A structure consisting of one large unhewn stone restingontwo or more unhewn stones placed erect in the earth: a term also frequently used as synonymous with cromlech.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a prehistoric megalithic tomb typically having two large upright stones and a capstone
Word Usage
"Some archæologists also apply the word dolmen to rectangular chambers roofed with more than one slab."