'Megalith' definitions:
Definition of 'megalith'
From: WordNet
noun
Memorial consisting of a very large stone forming part of a prehistoric structure (especially in western Europe) [syn: megalith, megalithic structure]
Definition of 'Megalith'
From: GCIDE
- Megalith \Meg"a*lith\, n. [Mega- + -lith; cf. F. m['e]galithe.] A large stone; especially, a large stone used in constructing ancient monuments. -- {Meg`a*lith"ic}, a. [1913 Webster]