Dictionary 1. (n.) The power of water employed to move machinery, etc.2. (n.) A fall of water which may be used to drive machinery; a site for a water mill; a water privilege. Thesaurus atomic power electric horsepower electropower horsepower hydraulic power hydroelectric power hydroelectricity impulse jet power manpower nuclear power piston power power load propulsion rocket power solar power steam power thermonuclear power thrust water power wattage watts |