What is the meaning of lever?

noun

• A rigid bar pivoted about a fulcrum.
• A simple machine that gives a mechanical advantage when given a fulcrum.
• A flat metal tumbler in a lever lock.
  • synonyms: lever tumbler

verb

• To move or force, especially in an effort to get something open.
  • usage: "The burglar jimmied the lock": "Raccoons managed to pry the lid off the garbage pail"
  • synonyms: pry, prise, prize, jimmy