Megalith

['megəlɪθ] or ['mɛɡəlɪθ]

(noun.) memorial consisting of a very large stone forming part of a prehistoric structure (especially in western Europe).

Typed by Corinne--From WordNet

(n.) A large stone; especially, a large stone used in ancient building.

Typist: Vance

n. a huge stone.—adj. Megalith′ic.

Edited by Charlene