From Longman Dictionary of Contemporary Englishhorsepowerhorse‧pow‧er /ˈhɔːsˌpaʊə $ ˈhɔːrsˌpaʊr/ noun (plural horsepower) [countable, uncountable] (written abbreviation hp) a unit for measuring the power of an engine, or the power of an engine measured like this a two-hundred horsepower engine the superior horsepower of a Volkswagen
Examples from the Corpus
horsepower• It had a 700 horsepower V8 that was fuelled on a mixture of alcohol and nitro-methane.• Often makers try pulling a fast one by giving a tractor a number that's bigger than its actual horsepower.• Rather, automatic horsepower was, itself, the first phase of the knowledge revolution.• The engine of the big mechanical monster was ticking over with the deep throb of impatient, reined-in horsepower.• Boost is engine manifold pressure, a key ingredient in the maintenance of horsepower and ultimately, miles per hour.• His belting experiments, too, focused on costs more than on horsepower or coefficients of friction.From Longman Business Dictionaryhorsepowerhorse‧pow‧er /ˈhɔːsˌpaʊəˈhɔːrsˌpaʊr/ written abbreviation hp noun [countable, uncountable] a unit for measuring the power of an engineThe test vehicle’s horsepower was increased by 11%. 