workhorse

noun
UK /ˈwɜːk.hɔːs/
US /ˈwɝːk.hɔːrs/

A workhorse is a strong animal or machine that does a lot of hard work.

The old truck is a real workhorse that never lets us down.


OTHER MEANINGS

2. A person who works very hard and is relied on to do difficult tasks.

She is the workhorse of the team, always finishing the toughest jobs.

3. A vehicle or piece of equipment that is strong, dependable, and used for heavy or frequent work.

This little car has been a workhorse for our family for ten years.

4. A horse used for heavy labor such as pulling plows or carts.

The farmer hitched the workhorse to the plow at sunrise.