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of infecting. There was a strict order against coming to those pits, and that was only to prevent infection. De Foe.

he act of attaching a ring, clasp, or frame, to the genital organs in such a manner as to prevent copulation.

To prevent or hinder oxidation, rust, or decay; as, inoxidizing oils or varnishes.

To prevent the transfer o Insulating stool (Elec.), a stool with legs of glass or some other nonconductor of electricity, used for insulating a person or any object placed upon it.

The act of separating a body from others by nonconductors, so as to prevent the transfer of electricity or of heat; also, the state of a body so separated.

h and the report; nothing intervened ( i. e., between the intention and the execution) to prevent the undertaking.

; to surround of hem in with troops, so as to intercept succors of men and provisions and prevent escape; to lay siege to; as, to invest a town.

To prevent from being reconciled; to alienate or disaffect. [Obs.]

the insolence of a tyrant irritates his subjects. Dismiss the man, nor irritate the god: Prevent the rage of him who reigns above. Pope.

A hood or other device placed over a chimney or vent pipe, to prevent a back draught.

or anything, esp. a covering of some nonconducting material such as wood or felt, used to prevent radiation of heat, as from a steam boiler, cylinder, pipe, etc.

Any thick mass of rock which prevents miners from following the lode or vein.

To join by means of joggles, so as to prevent sliding apart; sometimes, loosely, to dowel. The struts of a roof are joggled into the truss posts. Gwilt.

A bar, pin or wedge, to secure a crank, pulley, coupling, etc., upon a shaft, and prevent relative turning; sometimes holding by friction alone, but more frequently by its resistance to shearing, being usually embedded partly in the shaft and partly in the crank, pulley, etc.

The projection on the tang of the blade of a pocket knife, which prevents the edge of the blade from striking the spring. See Illust. of Pocketknife.

A member of a common form of truss, as a roof truss. It is strictly a tie, intended to prevent the sagging of the tiebeam in the middle. If there are struts, supporting the main rafters, they often bear upon the foot of the king-post. Called also crown-post.

The clothing (esp., an outer, wooden covering), as of a steam cylinder, applied to prevent the radiation of heat; a covering of lags; -- called also deading and cleading.

ula. -- Safety lamp, a miner's lamp in which the flame is surrounded by fine wire gauze, preventing the kindling of dangerous explosive gases; -- called also, from Sir Humphry Davy the inventor, Davy lamp. -- To smell of the lamp, to bear marks of great study and labor, as a literary composition.

door. To find the latchstring out, to meet with hospitality; to be welcome. (Intrusion is prevented by drawing in the latchstring.) [Colloq. U.S.]

Of a character which prevents the compositor from earning the usual wages; -- opposed to fat; as lean copy, matter, or type.