Meaning

noun a rigid bar pivoted about a fulcrum

noun a simple machine that gives a mechanical advantage when given a fulcrum

noun a flat metal tumbler in a lever lock

originFrom Middle English lever, levore, levour, from Old French leveor, leveur (“a lifter, lever (also Old French and French levier)”), from Latin levātor (“a lifter”), from levō (“to raise”). Doublet of levator.

Etymology from Wiktionary, CC BY-SA 3.0