Hypertext Webster Gateway: "cabochon"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Cabochon \Ca`bo`chon"\ (k[.a]`b[-o]`sh[^o]N"), n. [F.] (Jewelry)
A stone of convex form, highly polished, but not faceted;
also, the style of cutting itself. Such stones are said to be
cut en cabochon.
From WordNet (r) 1.7 (wn)
cabochon
n : a highly polished convex-cut but unfaceted gem
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