English definition of Lever

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Definition of lever

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Lever (n.) A rigid piece which is capable of turning about one point, or axis (the fulcrum), and in which are two or more other points where forces are applied; -- used for transmitting and modifying force and motion. Specif., a bar of metal, wood, or other rigid substance, used to exert a pressure, or sustain a weight, at one point of its length, by receiving a force or power at a second, and turning at a third on a fixed point called a fulcrum. It is usually named as the first of the six mecha

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Rock Staff :: Rock staff (v. i.) An oscillating bar in a machine, as the lever of the bellows of a forge..

Trigger :: Trigger (n.) A piece, as a lever, which is connected with a catch or detent as a means of releasing it; especially (Firearms), the part of a lock which is moved by the finger to release the cock and discharge the piece..

Acute :: Acute (a.) Having nice discernment; perceiving or using minute distinctions; penetrating; clever; shrewd; -- opposed to dull or stupid; as, an acute observer; acute remarks, or reasoning..

Grasshopper :: Grasshopper (n.) In ordinary square or upright pianos of London make, the escapement lever or jack, so made that it can be taken out and replaced with the key; -- called also the hopper..

Leverage :: Leverage (n.) The action of a lever; mechanical advantage gained by the lever.

Pry :: Pry (n.) A lever; also, leverage..

Regulator :: Regulator (n.) A contrivance for regulating and controlling motion, as: (a) The lever or index in a watch, which controls the effective length of the hairspring, and thus regulates the vibrations of the balance. (b) The governor of a steam engine. (c) A valve for controlling the admission of steam to the steam chest, in a locomotive..

Heterodromous :: Heterodromous (a.) Moving in opposite directions; -- said of a lever, pulley, etc., in which the resistance and the actuating force are on opposite sides of the fulcrum or axis..

Power :: Power (n.) Applied force; force producing motion or pressure; as, the power applied at one and of a lever to lift a weight at the other end..

Crowbar :: Crowbar (n.) A bar of iron sharpened at one end, and used as a lever..

Smart :: Smart (v. i.) Accomplishing, or able to accomplish, results quickly; active; sharp; clever..

Differential :: Differential (a.) Relating to differences of motion or leverage; producing effects by such differences; said of mechanism.

Sheep''s-foot :: Sheep's-foot (n.) A printer's tool consisting of a metal bar formed into a hammer head at one end and a claw at the other, -- used as a lever and hammer..

Neptune :: Neptune (n.) The remotest known planet of our system, discovered -- as a result of the computations of Leverrier, of Paris -- by Galle, of Berlin, September 23, 1846. Its mean distance from the sun is about 2,775,000,000 miles, and its period of revolution is about 164,78 years..

Lever :: Lever (adv.) Rather.

Cantalever :: Cantalever (n.) A projecting beam, truss, or bridge unsupported at the outer end; one which overhangs..

Jack :: "Jack (n.) A portable machine variously constructed, for exerting great pressure, or lifting or moving a heavy body through a small distance. It consists of a lever, screw, rack and pinion, hydraulic press, or any simple combination of mechanical powers, working in a compact pedestal or support and operated by a lever, crank, capstan bar, etc. The name is often given to a jackscrew, which is a kind of jack..

Able :: Able (superl.) Specially: Having intellectual qualifications, or strong mental powers; showing ability or skill; talented; clever; powerful; as, the ablest man in the senate; an able speech..

Expert :: Expert (a.) Taught by use, practice, or experience, experienced; having facility of operation or performance from practice; knowing and ready from much practice; clever; skillful; as, an expert surgeon; expert in chess or archery..

Pallet :: Pallet (n.) One of the pieces or levers connected with the pendulum of a clock, or the balance of a watch, which receive the immediate impulse of the scape-wheel, or balance wheel..