[kab-uh-shon; Fr. ka-baw-shawn] 
noun, plural -chons [-shonz; Fr. -shawn] , adverb | 1. | a precious stone of convex hemispherical or oval form, polished but not cut into facets. |
| 2. | an ornamental motif resembling this, either concave or convex and often surrounded by ornately carved leaf patterns, used on furniture of the 18th century. |
| 3. | in the form of a cabochon: a turquoise cut cabochon. |
| 4. | being cut cabochon: cabochon gems. |
cab·o·chon (kāb'ə-shŏn')  (click for larger image in new window) n.
[French, from Old North French, augmentative of caboche, head; see cabbage.] |
əˌʃɒn