Definition of "power-house" []

• In water-works, and other works in which machinery is driven by power from steam, electric, or other prime motors, a building especially provided to contain the prime motor or motors from which power is conveyed to the driven machinery by a main shaft and gearing, or by a belt or cable. (noun)

The Century Dictionary (Public Domain)

• "He introduced me to Lena Rustin, a tiny power-house of a woman who was also an experienced speech therapist."
• "Despite the ominous signs, France is pushing on with a grand plan, dreamed up after the start of the 2003 Iraq war to create a foreign media power-house that could challenge the dominance of U.S news channels."
• "If India is going to assume its status with the other BRIC countries as an economic power-house, its model of 'development' needs to be reassessed."