lever

nouns

a rigid bar pivoted about a fulcrum
lever
is a type of (narrower)
a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon
"there were bars in the windows to prevent escape"
bar
a simple machine that gives a mechanical advantage when given a fulcrum
lever
is a type of (narrower)
a device for overcoming resistance at one point by applying force at some other point
machine, simple machine
a flat metal tumbler in a lever lock
lever, lever tumbler

verbs

to move or force, especially in an effort to get something open
"The burglar jimmied the lock": "Raccoons managed to pry the lid off the garbage pail"
jimmy, lever, prise, prize, pry
is derived from
leverage