Main Entry:

horse·pow·er

Pronunciation:

\ˈhȯrs-ˌpau̇(-ə)r\

Function:

noun

Date:

1806

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>