3. adj. (of a voice or sound) having a sharp, clear tone
4. adj. Of surpassing excellence.
The actor's performance in the play was simply brilliant.
5. adj. Magnificent or wonderful.
6. adj. Highly intelligent.
She is a brilliant scientist.
7. n. A finely cut gemstone, especially a diamond, cut in a particular form with numerous facets so as to maximize light return through the top (called "table") of the stone.
8. n. (printing, dated) The size of type between excelsior and diamond, standardized as 4-point.
9. n. Most hummingbird species of the genus Heliodoxa.
10. n. A kind of cotton goods, figured on the weaving.