horsepower

Short definition from Wiktionary

Noun

1. 1
   Power derived from the motion of a horse.
2. 2
   A nonmetric unit of power with various definitions, commonly the mechanical horsepower, approximately equal to 745.7 watts.
3. 3
   Metric horsepower, a metric unit approximately equal to 735.5 watts.
4. 4
   Strength, performance capability, specs, or similar.