
• A machine worked by a horse, for driving other machinery; a horse motor. • A unit of power, used in stating the power required to drive machinery, and in estimating the capabilities of animals or steam engines and other prime movers for doing work. It is the power required for the performance of work at the rate of 33,000 English ...
Found on
http://thinkexist.com/dictionary/meaning/horse_power/

A unit of measurement for engine power that was originally developed as a way to express the output of steam locomotives in terms of the strength of draft horses.
Found on
http://www.edmunds.com/glossary/
Horse' pow`er 1. The power which a horse exerts.
2. (Machinery) A unit of power, used in stating the power required to drive machinery, and in estimating the capabilities of animals or steam engines and other prime movers for doing work. It is the power required for the performance of work at the rate of 3...
Found on
http://www.encyclo.co.uk/webster/H/63
(hp) It is a practical unit of power which equal to 550 foot-pound per second or 746 watts.
Found on
http://www.vidyagyaan.com/general-knowledge/science/glossary-of-physics-ter

33,000 foot pounds per minute. A common method of measuring work.
Found on
https://www.encyclo.co.uk/local/21120
No exact match found.