noun Geology.

a sticky clay formed by the thorough weathering of glacial drift, the thickness of the clay furnishing means for comparing relative lengths of interglacial ages.

Origin of gumbotil

1915–20; gumbo + til, variant of till4 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for gumbotil



a sticky clay formed by the weathering of glacial drift

Word Origin for gumbotil

C20: from gumbo + til (l) 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