What does "horsepower-hour" mean?

A unit of energy equal to the amount of work a horse is capable of delivering during an hour.

What is a synonym for "horsepower-hour"?

Common synonyms include: calorie, dyne, kilowatt hour, photon, quantum.

noun

noun ·Rare ·Advanced level

Noun

1
A unit of energy equal to the amount of work a horse is capable of delivering during an hour.
2
a unit of work equal to the work done by one horsepower in one hour wordnet