bright line
A clear distinction in the context of a legal, moral, ethical, or analytical judgment.
In these situations, there is no bright line between aggressive play and outright cheating.
adj
Emitting much light; visually dazzling; luminous, lucent, radiant.
The sky was remarkably bright and blue on that beautiful summer day.
Where the bright Seraphim in burning row / Their loud up-lifted Angel trumpets blow; / And the Cherubick hoſt in thouſand quires / Touch their immortal Harps of golden wires, […]
Of light: brilliant, intense.
Could you please dim the light? It’s far too bright.
Of an object, surface, etc.: reflecting much light; having a high lustre; gleaming, shiny.
Of a place: not dark; well-lit.
It was said that the Irish whom [Louis de Duras, 2nd Earl of] Feversham had let loose were marching on London and massacring every man, woman, and child on the road. At one in the morning the drums of the militia beat to arms. […] Before two the capital wore a face of stern preparedness which might well have daunted a real enemy, if such an enemy had been approaching. Candles were blazing at all the windows. The public places were as bright as at noonday.
Of climate or weather: not cloudy or gloomy; fair; also, of a period of time, the sky, etc.: characterized by much sunshine and good weather.
[H]e felt the influence of the bright sky, and looked up smiling into its deep unfathomable blue.
Serene, smiling, enigmatic, she faced him with no fear whatever showing in her dark eyes. The clear light of the bright autumn morning had no terrors for youth and health like hers.
noun
Brightness, glow.
Thee Father firſt they ſung Omnipotent, / […] when thou ſhad'ſt / The full blaze of thy beams, and through a cloud / Drawn round about thee like a radiant Shrine, / Dark with exceſſive bright thy ſkirts appeer, / Yet dazle Heav'n, […]
Glory, splendour.
Something (especially a product intended for sale) that has vivid colours or a lustrous appearance.
A person with a naturalistic worldview with no mystical or supernatural elements.
Brights constitute 60% of American scientists, and a stunning 93% of those scientists good enough to be elected to the elite National Academy of Sciences (equivalent to Fellows of the Royal Society) are brights.
Many of us brights have devoted considerable time and energy at some point in our lives to looking at the arguments for and against the existence of God, and many brights continue to pursue these issues, hacking away vigorously at the arguments of believers as if they were trying to refute a rival scientific theory. But not I.
An artist's brush used in acrylic and oil painting with a long ferrule and a flat, somewhat tapering bristle head.
adv
In a bright manner; brightly, glowingly, luminously, lustrously.
Referring to colour: with bold or vivid colours; brightly, boldly, vividly.
Referring to sight, sound, understanding, etc.: clearly, distinctly; brightly.