What does "rimstone" mean?

A secondary mineral deposit, with a stone-wall-like appearance made up of calcite and other minerals, that builds up to create cave pools.

What is a synonym for "rimstone"?

Common synonyms include: gour, gour.

noun

noun ·Rare ·Advanced level

Noun

1
A secondary mineral deposit, with a stone-wall-like appearance made up of calcite and other minerals, that builds up to create cave pools. countable, uncountable

From rim + stone.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.