earth pillar

American

noun

Geology.

a pillar of earthy matter left by erosion of the surrounding ground.

earth pillar British

noun

a landform consisting of a column of clay or earth capped and protected from erosion by a boulder

"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

Etymology

Origin of earth pillar

First recorded in 1865–70

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023