horse power

See also: horsepower and horse-power

English

Noun

horse power (plural horse powers)

  1. (chiefly historical, dialectal) Any 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.
    Alternative form: horse-power
    Synonym: horse engine
    Coordinate terms: donkey engine, water engine, wind engine, watermill, windmill
    In that era, they powered their corn sheller and their thresher with a horse power.
  2. (archaic) Alternative spelling of horsepower (unit of power equaling 745 watts or similar figure).
    Coordinate term: donkey power
  3. Used other than figuratively or idiomatically: motive effort supplied by one or more horses.
    Alternative forms: horsepower, horse-power
    Coordinate terms: donkey power, manpower, humanpower
    In the 1920s through 1940s, the push for power farming aimed to replace horse power with tractor power on the farm.

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