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A conical rifle bullet, with a cavity in its base plugged with a piece of iron, which, by the explosion of the charge, is driven farther in, expanding the sides to fit closely the grooves of the barrel.

Arsenical iron pyrites; arsenopyrite.

An impure yellow sulphate of iron; yellow copperas or copiapite.

A process, invented by P. Ostberg, for producing malleable iron castings by melting wrought iron, to which from 0.05 to 0.1 per cent of aluminium is added to lower the melting point, usually in a petroleum furnace, keeping the molten metal at the bubbling point until it becomes quiet, and then pouring the molten metal…

The malleable iron produced by mitis casting; -- called also simply mitis.

Shot or bits of iron used sometimes in loading cannon.

A curved plate of iron (originally of wood) back of the share of a plow, which turns over the earth in plowing.

The crossed iron that supports the upper millstone by resting on the spindle; a millrind. Cross moline (Her.), a cross each arm of which is divided at the end into two rounded branches or divisions.

te of fusion, esp. when the liquid state is produced by a high degree of heat; as, molten iron.

A trader; a dealer; -- now used chiefly in composition; as, fishmonger, ironmonger, newsmonger.

An ironclad war vessel, very low in the water, and having one or more heavily-armored revolving turrets, carrying heavy guns.

The weight or hammer of a pile driver, that is, a very heavy mass of iron, which, being raised on high, falls on the head of the pile, and drives it into the earth; the falling weight of a drop hammer used in forging.

A short, round iron bar or lever used in naval gunnery. Totten.

A basic sulphate of iron; -- so named from Monsel, a Frenchman.

d the tossed bark in moorings swings. Moore. Mooring block (Naut.), a heavy block of cast iron sometimes used as an anchor for mooring vessels.

lance in shape to the utensil above described. Mortar bed (Mil.), a framework of wood and iron, suitably hollowed out to receive the breech and trunnions of a mortar. -- Mortar boat or vessel (Naut.), a boat strongly built and adapted to carrying a mortar or mortars for bombarding; a bomb ketch. -- Mortar piece, a mo…

made by a mortise and tenon. -- Mortise lock. See under Lock. -- Mortise wheel, a cast-iron wheel, with wooden clogs inserted in mortises on its face or edge; -- also called mortise gear, and core gear.

Money; -- in contempt. The fatal muck we quarreled for. Beau. & Fl. Muck bar, bar iron which has been through the rolls only once. -- Muck iron, crude puddled iron ready for the squeezer or rollers. Knight.

e lowest proportion, or the proportions are connected by some simple common factor; thus, iron and oxygen unite in the proportions FeO, Fe2O3, Fe3O4, in which compounds, considering the oxygen, 3 and 4 are simple multiplies of

Iron pyrites, or arsenical pyrites; -- so called by the Cornish miners.