Mechanical powers Meaning, Definition & Usage

Definitions
  1. certain simple instruments, such as the lever and its modifications (the wheel and axle and the pulley), the inclined plane with its modifications (the screw and the wedge), which convert a small force acting throught a great space into a great force acting through a small space, or vice versa, and are used separately or in combination.
Definitions
  1. . See under Mechanical.

Webster 1913