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>