An Etymological Dictionary of Astronomy and Astrophysics

A rigid bar that pivots about a point and is used to move or lift a load at one end by applying force to the other end. → lever arm.

Etymology (EN): M.E. levere, levour; O.Fr. levier “a lifter, a lever,” agent noun from lever “to raise,” from L. levare “to raise,” from levis “light” in weight.

Etymology (PE): Ahrom, of unknown etymology.