horse power

名词noun

1. 1chiefly historical, dialectalAny of a class of machines that used draft horses as a source of power to an output shaft or sheave. Treadmill types and merry-go-round–like types existed.
2. 2archaicAlternative spelling of horsepower (“unit of power equaling 745 watts or similar figure”).
3. 3Used other than figuratively or idiomatically: motive effort supplied by one or more horses.