Webster's Revised Unabridged Dictionary · 1913

Capstone

Capstone , noun

(Paleontology) A fossil echinus of the genus Cannulus; -- so called from its supposed resemblance to a cap.

Text from the public-domain GNU Collaborative International Dictionary of English, derived from Webster's Revised Unabridged Dictionary (1913). Definitions marked with were added by later GCIDE contributors and are not in the original 1913 edition.

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