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A dark green pigment found in small quantity in human gallstones.

Mica containing iron and magnesia, generally of a black or dark green color; -- a common constituent of crystalline rocks. See Mica.

A dark brown pigment extracted from the soot of wood.

Destitute of light, or incapable of reflecting it; of the color of soot or coal; of the darkest or a very dark color, the opposite of white; characterized by such a color; as, black cloth; black hair or eyes. O night, with hue so black! Shak.

A sweet and juicy variety of European grape, of a dark purplish black color, much grown under glass in northern latitudes.

A dungeon or dark cell in a prison; a military lock-up or guardroom; -- now commonly with allusion to the cell (the Black Hole) in a fort at Calcutta, into which 146 English prisoners were thrust by the nabob Suraja Dowla on the night of June 20, 17656, and in which 123 of the prisoners died before morning from lack of…

A copious vomiting of dark-colored matter; or the substance so discharged; -- one of the most fatal symptoms in yellow fever.

Dark-visaged; swart.

Having a black, dark, or gloomy face or aspect.

To make dark; to darken; to cloud. "Blackened the whole heavens." South.

A heart-shaped cherry with a very dark-colored skin.

In a black manner; darkly, in color; gloomily; threateningly; atrociously. "Deeds so blackly grim and horrid." Feltham.

ty or state of being black; black color; atrociousness or enormity in wickedness. They're darker now than blackness. Donne.

Nebraska; -- a nickname alluding to the dark color of the water of its rivers, due to the presence of a black vegetable mold in the soil.

A name given to several dark-colored timbers. The East Indian black wood is from the tree Dalbergia latifolia. Balfour.

Dark blue or bluish gray; lead-colored. [Scot.]

nse, direct light accompanied with heat; as, to seek shelter from the blaze of the sun. O dark, dark, dark, amid the blaze of noon! Milton.

To darken; to obscure to the eye or understanding; to conceal; to deceive. Such darkness blinds the sky. Dryden. The state of the controversy between us he endeavored, with all his art, to blind and confound. Stillingfleet.

Having the eyes covered; blinded; having the mental eye darkened. Hence: Heedless; reckless; as, blindfold zeal; blindfold fury. Fate's blindfold reign the atheist loudly owns. Dryden.

Having the color of the clear sky, or a hue resembling it, whether lighter or darker; as, the deep, blue sea; as blue as a sapphire; blue violets. "The blue firmament." Milton.