| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024lev•er /ˈlɛvɚ, ˈlivɚ/USA pronunciation n. [countable]- a handle used to operate something, as a piece of machinery.
- Mechanicsa stiff, rigid bar used to move or lift something heavy, by placing one end of it under the heavy object, resting the middle of it over some other object, and by pushing down on the other end.
- a means of persuasion:used money as a political lever.
v. [~ + object] - to move or lift with or as if with a lever.
See -lev-. WordReference Random House Unabridged Dictionary of American English © 2024lev•er (lev′ər, lē′vər),USA pronunciation n. - Mechanicsa rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third. Cf. machine (def. 4b).
- a means or agency of persuading or of achieving an end:Saying that the chairman of the board likes the plan is just a lever to get us to support it.
- Time[Horol.]the pallet of an escapement.
v.t., v.i. - to move with or apply a lever:to lever a rock; to lever mightily and to no avail.
- Latin levāre to lighten, lift, verb, verbal derivative of levis light) + -ier -ier2
- Anglo-French; Old French levier, equivalent. to lev(er) to lift (
- Middle English levere, levour for *lever 1250–1300
- Biographical Charles James ("Cornelius O'Dowd''), 1806–72, Irish novelist and essayist.
Collins Concise English Dictionary © HarperCollins Publishers:: lever /ˈliːvə/ n - a rigid bar pivoted about a fulcrum, used to transfer a force to a load and usually to provide a mechanical advantage
- any of a number of mechanical devices employing this principle
- a means of exerting pressure in order to accomplish something; strategic aid
vb - to prise or move (an object) with a lever
Etymology: 13th Century: from Old French leveour, from lever to raise, from Latin levāre, from levis light |