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An old term rather loosely used to designate various dark- colored, heavy igneous rocks, including especially the feldspathic- augitic rocks, basalt, dolerite, amygdaloid, etc., but including also some kinds of diorite. Called also trap rock. Trap tufa, Trap tuff, a kind of fragmental rock made up of fragments and eart…

A mineral of a dark brown color, generally with a fibrous, massive structure. It is a fluophosphate of iron and manganese.

Troubled; dark; gloomy. [Obs.] "With full trouble cheer." Chaucer.

confined to certain islets near the coast. It reaches a length of two and a half feet, is dark olive- green with small white or yellowish specks on the sides, and has yellow spines along the back, except on the neck.

A dark-colored kind of marble; touchstone. [Obs.] Sir J. Harrington.

including the Afghans, and characterized chiefly by stature above mean, fair complexion, dark, or sometimes gray, eyes, brachycephaly, and very long, prominent, and moderately narrow nose.

The double cyanide of ferrous and ferric iron, a dark blue amorphous substance having a coppery luster, used in dyeing, calico printing, etc. Cf. Prussian blue, under Prussian.

Of or pertaining to umber; resembling umber; olive-brown; dark brown; dark; dusky. Their harps are of the umber shade That hides the blush of waking day. J. R. Drake.

The central dark portion, or nucleus, of a sun spot.

Not easily perceived, as if from being darkened or shaded; obscure. [Obs.] Sir H. Wotton.

Of or pertaining to the shade or darkness; shadowy; unreal; secluded; retired. [R.] B. Jonson.

A European aquatic toad (Bombinator igneus). Its back is dark; its belly is marked with crimson. Called also feuerkröte.

inclose in, or as in, an urn; to inurn. When horror universal shall descend, And heaven's dark concave urn all human race. Young.

or extreme limit; remote from the center; outer. [Obs.] Through utter and through middle darkness borne. Milton. The very utter part pf Saint Adelmes point is five miles from Sandwich. Holinshed.

eumon (Herpestes galera) native of Southern Africa and Madagascar. It is reddish brown or dark brown, grizzled with white. Called also vondsira, and marsh ichneumon.

n the veins, or having the same qualities as if contained in the veins, that is, having a dark bluish color and containing an insufficient amount of oxygen so as no longer to be fit for oxygenating the tissues; -- said of the blood, and opposed to arterial.

Madeira mahogany; the coarse, dark-colored wood of the Persea Indica.

Dark blue, inclining to red; bluish purple; having a color produced by red and blue combined. Violet shell (Zoöl.), any species of Ianthina; -- called also violet snail. See Lanthina. -- Violet wood, a name given to several kinds of hard purplish or reddish woods, as king wood, myall wood, and the wood of the Andira v…

y above, white or yellowish white beneath. There is a white band across the muzzle, and a dark band on each cheek. It inhabits grassy plains, and is noted for its extensive burrows and for heaping up miscellaneous articles at the mouth of its burrows. Called also biscacha, bizcacha, vischacha, vishatscha.…

A hydrous phosphate of iron of a blue to green color, growing darker on exposure. It occurs in monoclinic crystals, also fibrous, massive, and earthy.