horse·pow·er 
/ˈhoɚsˌpawɚ/ noun
plural horsepower /ˈhoɚsˌpawɚ/ noun : a unit used to measure the power of engines [noncount] ▪ We need an engine with greater/more horsepower. [=a more powerful engine] [count] ▪ an engine with 200 horsepower — often used figuratively ▪ intellectual horsepower
