lever

noun

1. A rigid piece which is capable of turning about one point, or axis (fulcrum), and in which are two or more other points where forces are applied; — used for transmitting and modifying force and motion. Specifically, 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 mechanical powers, and is of three kinds, according as either the fulcrum F, the weight W, or the power P, respectively, is situated between the other two, as in the figures.

2. Specifically, 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 mechanical powers, and is of three kinds, according as either the fulcrum F, the weight W, or the power P, respectively, is situated between the other two, as in the figures.

3. A small such piece to trigger or control a mechanical device (like a switch or a button).

4. A bar, as a capstan bar, applied to a rotatory piece to turn it.

verb

1. To move with a lever.

   “With great effort and a big crowbar I managed to lever the beam off the floor.”

2. To use, operate or move (something) like a lever (physically).

3. To use (something) like a lever (in an abstract sense).

4. To increase the share of debt in the capitalization of a business.

adverb

1. Rather.

noun

1. A levee.