Power derived from the motion of a horse.
Strength.
A nonmetric unit of power (symbol hp) with various definitions, for different applications. The most common of them is probably the mechanical horsepower, approximately equal to 745.7 watts.
A metric unit (symbol often PS from the German abbreviation), approximately equal to 735.5 watts.
The action of driving or pushing, typically forward or onward; a propulsive force or impulse.