Ribstone
noun ·Rare ·Advanced level
Definitions
- 1 A petroglyph in the form of an animal's rib cage.
"Virtually all of the formal investigations of the Alberta ribstones have led to conclusions of great antiquity. Many of the ribstones are of quartzite, one of the hardest rocks known. These monoliths exhibit advanced erosion and deep patination."
Example
More examples"Virtually all of the formal investigations of the Alberta ribstones have led to conclusions of great antiquity. Many of the ribstones are of quartzite, one of the hardest rocks known. These monoliths exhibit advanced erosion and deep patination."
Etymology
From rib + stone.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.