a stone of great size, especially in ancient construction work, as the Cyclopean masonry, or in prehistoric Neolithic remains, as dolmens or menhirs.
Origin of megalith
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for megalith
Historical Examples of megalith
Schliz has some reason for calling these megalith people largely traders.The New Stone Age in Northern Europe
John M. Tyler
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
huge prehistoric stone, 1853, back-formation from megalithic.
Online Etymology Dictionary, © 2010 Douglas Harper