Dictionary
horsepower
noun horse·pow·er \ˈhȯrs-ˌpau̇(-ə)r\
: a unit used to measure the power of engines
Full Definition of HORSEPOWER
1
: the power that a horse exerts in pulling
2
: a unit of power equal in the United States to 746 watts and nearly equivalent to the English gravitational unit of the same name that equals 550 foot-pounds of work per second
3
: effective power <intellectual horsepower> <computing horsepower>
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First Known Use of HORSEPOWER
1806
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HORSEPOWER Defined for Kids
horsepower
noun horse·pow·er \ˈhȯrs-ˌpau̇-ər\
Definition of HORSEPOWER for Kids
: a unit of power that equals the work done in lifting 550 pounds one foot in one second
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