HORSEPOWER /ˈhɔːsˌpaʊə/ ► audio Scrabble 18 Words With Friends 18 Definition noun a unit of power equal to 746 watts. — synonyms: HP, H.P. Examples “political horsepower” See all 240 words you can make from HORSEPOWER → 10-letter words Words starting with H Words ending with R ← Unscramble different letters