workhorse

/ˈwɜrkˌhɔrs/
noun
  1. A person or machine that works very hard and reliably, often doing the most difficult or important tasks.
    • This old truck has been a real workhorse for our farm for twenty years.
    • She is the workhorse of the team, always handling the toughest projects.
    • The laptop is a workhorse that can run multiple programs at once without slowing down.
  2. A horse used for heavy farm work or pulling loads, rather than for riding or racing.
    • Workhorses are often stronger and calmer than riding horses.
    • The farmer relied on his two workhorses to plow the fields.
    • Before tractors, every farm needed a sturdy workhorse.
Synonyms
What does "workhorse" mean? | whatsthatwordmean | whatsthatwordmean