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Iron ore in coarse powder, prepared for reduction by the Catalan process.

A hollow ball or shell of iron filled with powder of other explosive, ignited by means of a fuse, and thrown from the hand among enemies. Hand grenade. (a) A small grenade of iron or glass, usually about two and a half inches in diameter, to be thrown from the hand into the head of a sap, trenches, covered way, or upon…

To reduce to powder by friction, as in a mill, or with the teeth; to crush into small fragments; to produce as by the action of millstones. Take the millstones, and grind meal. Is. xivii. 2.

to a distance; any firearm or instrument for throwing projectiles by the explosion of gunpowder, consisting of a tube or barrel closed at one end, in which the projectile is placed, with an explosive charge behind, which is ignited by various means. Muskets, rifles, carbines, and fowling pieces are smaller guns, for h…

ike that of Guy Fawkes, dressed up in England on the fifth of November, the day of the Gunpowder Plot. The lady . . . who dresses like a guy. W. S. Gilbert.

A dark brown powder containing iron, prepared by the action of zinc dust as a reducing agent upon the coloring matter of the blood, used medicinally as a hematinic.

g of sawdust, charcoal, niter, and ferrocyanide of potassium, used as a substitute for gunpowder.

An important ore of iron, the sesquioxide, so called because of the red color of the powder. It occurs in splendent rhombohedral crystals, and in massive and earthy forms; -- the last called red ocher. Called also specular iron, oligist iron, rhombohedral iron ore, and bloodstone. See Brown hematite, under Brown.…

alba). The fragrant white blossoms are used by the Buddhists in religious ceremonies. The powdered leaves furnish a red coloring matter used in the East to stain the hails and fingers, the manes of horses, etc.

imes exceeds five feet in length. (c) The Angelica tree. See under Angelica. -- Hercules powder, an explosive containing nitroglycerin; -- used for blasting.

A stone of a fine grit, or a slab, as of metal, covered with an abrading substance or powder, used for sharpening cutting instruments, and especially for setting razors; an oilstone. Tusser. Hone slateSee Polishing slate. -- Hone stone, one of several kinds of stone used for hones. See Novaculite.

A vessel made of a horn; esp., one designed for containing powder; anciently, a small vessel for carrying liquids. "Samuel took the hornof oil and anointed him [David]." 1 Sam. xvi. 13.

One who, or that which, produces ignition; especially, a contrivance for igniting the powder in a torpedo or the like. [Written also igniter.]

at cannot be felt; extremely fine, so that no grit can be perceived by touch. "Impalpable powder." Boyle.

A brown amorphous powder, obtained from indican.

l coloring material of commercial indigo, from which it is obtained as a dark blue earthy powder, with a reddish luster, C16H10N2O2, which may be crystallized by sublimation. Indigo blue is also made from artificial amido cinnamic acid, and from artificial isatine; and these methods are of great commercial importance.…

ed mainly of the shells of the microscopic plants called diatoms. It is used in polishing powder, and in the manufacture of dynamite.

Fig.: Any small, trivial, or contemptible person or thing. Thomson. Insect powder,a powder used for the extermination of insects; esp., the powdered flowers of certain species of Pyrethrum, a genus now merged in Chrysanthemum. Called also Persian powder.

An agent or preparation for destroying insects; an insect powder. -- In*sec"ti*ci`dal, a.

m; agency. The instrumentality of faith in justification. Bp. Burnet. The discovery of gunpowder developed the science of attack and defense in a new instrumentality. J. H. Newman.