rimstone

[ rim-stohn ]

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

Origin of rimstone

1
First recorded in 1925–30; rim + stone

Words Nearby rimstone

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024