any of numerous large sandstone blocks or fragments found in south-central England, probably remnants of eroded Tertiary beds.
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British Dictionary definitions for sarsen
geology a boulder of silicified sandstone, probably of Tertiary age, found in large numbers in S England
such a stone used in a megalithic monument
- Also called: greywether
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