rimstone

[rim-stohn]

See more synonyms for rimstone on Thesaurus.com

noun Geology.

a calcareous deposit forming a dam at the edge or outlet of an overflowing pool of water, as in a cavern.

Show More

Origin of rimstone

First recorded in 1925–30; rim + stone

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018