pow‧er‧house /ˈpaʊəhaʊs $ ˈpaʊr-/ noun [countable] informal

1. an organization or place where there is a lot of activity or where a lot of things are produced:
Europe’s industrial powerhouse

2. someone who is very strong or has a lot of energy:
a powerhouse of a man

[TahlilGaran] Dictionary of Contemporary English ▲