a machine that used draft horses as a source of power
the energy which a horse exerts.
A unit of power, used in stating the energy needed to drive machinery, and in calculating the capabilities of pets or steam engines and other prime movers for carrying out work. It will be the power necessary for the overall performance of just work at the price of 33,000 English units of work per minute; therefore, it's the energy that must definitely be exerted in raising 33,000 pounds during the price of one base each and every minute, or 550 pounds at price of 1 base per second, or 55 pounds at rate of ten foot per second, etc.
a device worked by a horse, for driving various other machinery; a horse engine.