boulder clay

noun Geology.

a glacial deposit consisting chiefly of unstratified clay with embedded boulders.

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Origin of boulder clay

First recorded in 1855–60

Words nearby boulder clay

boulangerie, boulangerite, Boulangism, boulder, Boulder Canyon, boulder clay, Boulder Dam, bouldering, boule, boules, bouleuterion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for boulder clay

boulder clay

noun

an unstratified glacial deposit consisting of fine clay, boulders, and pebblesSee also till 4
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