匹马力 pǐmǎlì horsepower Origin Definitions Defs Strokes Stroke Words Sentences Sents 匹 pǐ horsepower unit of power, often used for engines (colloquial abbreviation of 马力 mǎlì)马力 馬力 mǎlì horsepower (metric) A unit of power (PS) equal to the work done in one second to lift 75 kilograms by one meter, approximately equal to 735.5 watts.