I. ˈ ̷ ̷| ̷ ̷ noun
1.
a. : the power that a horse exerts in pulling
b. : a machine worked by a horse
2. : a standard 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 — compare brake horsepower , indicated horsepower
II. noun
: effective power
intellectual horsepower
computing horsepower