power house

Noun

powerhouse (plural powerhouses)

1. A power station; the building housing the core parts of a power station, such as the dynamo.
   • The new powerhouse comprised two tube turbines with a total capacity of 4,500 kW under 18.3 feet head.1986, Donald R. Froelich, S. K. Wagner, Fourth International Symposium on Hydro Power Fluid Machinery
2. (figuratively) Any source of power, energy or strength; a source of influence or inspiration.
   • The company has been a powerhouse in its industry for many years.
3. (Pilates) The muscles that give stability to the human torso and its relationship to the limb movements.
   • Near-synonym: core

   Synonyms:

   core

4. A very good hand of cards, likely to win.
   • A hand like A-2-3-4 is a powerhouse in Omaha/8, because it can easily make the best low hand and capture half the pot.2011, Richard D. Harroch, Lou Krieger, Poker For Dummies