Emitting or reflecting light readily or in large amounts; shining. Comparatively high on the scale of brightness. Full of light or illumination: a bright sunny day; a stage bright with spotlights. Characterizing a dyestuff that produces a highly saturated color; brilliant. Glorious; splendid: one of the bright stars of stage and screen; a bright moment in history. Full of promise and hope; auspicious: had a bright future in publishing. Happy; cheerful: bright faces. Animatedly clever; intelligent. High and clear: the bright sound of the trumpet section.