The adj brilliant has 6 senses (first 6 from tagged texts)
1. (11) brilliant, superb -- (of surpassing excellence; "a brilliant performance"; "a superb actor")
2. (7) brainy, brilliant, smart as a whip -- (having or marked by unusual and impressive intelligence; "some men dislike brainy women"; "a brilliant mind"; "a brilliant solution to the problem")
3. (2) brilliant, glorious, magnificent, splendid -- (characterized by grandeur; "the brilliant court life at Versailles"; "a glorious work of art"; "magnificent cathedrals"; "the splendid coronation ceremony")
4. (2) bright, brilliant, vivid -- (having striking color; "bright dress"; "brilliant tapestries"; "a bird with vivid plumage")
5. (2) brilliant -- (full of light; shining intensely; "a brilliant star"; "brilliant chandeliers")
6. (1) bright, brilliant -- (clear and sharp and ringing; "the bright sound of the trumpet section"; "the brilliant sound of the trumpets")