cabochon

from WordNet (r) 3.0 (2006)

cabochon
    n 1: a highly polished gem that is cut convexly but without
         facets

from The Collaborative International Dictionary of English v.0.48

cabochon \ca`bo`chon"\ (k[a^]`b[u^]*sh[aum]n"; Fr.
   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.
   [Webster 1913 Suppl. +PJC]

from The Collaborative International Dictionary of English v.0.48

cabochon \ca`bo`chon"\ (k[a^]`b[u^]*sh[aum]n"; Fr.
   k[.a]`b[-o]`sh[^o]N"), a. [see {cabochon}, n..] (Jewelry)
   Of, pertaining to, containing, or in the style of, a
   {cabochon}.
   [PJC]

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