Meaning ofleverin English

Noun

1. a bar used to apply force; transmit motion
2. a simple machine with a fulcrum; changes force direction
3. a small piece to trigger devices; control mechanisms
   The machine uses a lever to activate the alarm.
4. a rigid piece; modifies force and motion
   The lever on the door helps to open it more easily.
5. a bar used to turn a rotatory piece; applies force
   The mechanic used a lever to loosen the tight bolt.
6. an arm on a shaft; provides or obtains motion
   The engineer designed a lever system to operate the heavy machinery.