American Dictionary of the English Language

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BRILL'IANT, adjective [Eng. beryl and pearl.]

1. Sparkling with luster; glittering; as a brilliant gem; a brilliant dress.

2. Splendid; shining; as a brilliant achievement.

Washington was more solicitous to avoid fatal mistakes, than to perform brilliant exploits.

BRILL'IANT, noun A diamond of the finest cut, formed into angles, so as to refract the light, by which it is rendered more glittering.

1. In the manege, a brisk, high-spirited horse, with a stately carriage.