An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

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.

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.

Ahrom, of unknown etymology.

The distance between the point of application of a → force and the → axis around which the object could → rotate.

→ lever; → arm.