Hypertext Webster Gateway: "capstone"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Capstone \Cap"stone`\, n. (Paleon.)
A fossil echinus of the genus {Cannulus}; -- so called from
its supposed resemblance to a cap.
From WordNet (r) 1.7 (wn)
capstone
n 1: a final touch; a crowning achievement; a culmination [syn: {finishing
touch}, {copestone}]
2: a stone that forms the top of wall or building [syn: {copestone},
{coping stone}, {stretcher}]
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