Definition of powerhouse noun from the Oxford Advanced American Dictionary

     

    powerhouse

     noun
    noun
    NAmE//ˈpaʊərˌhaʊs//
     
     
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  1. 1a group or an organization that has a lot of power China has been described as an “emerging economic powerhouse.”
  2. 2a person or team that is very successful, especially in sports; a place that produces successful players and teams He helped transform the team into a powerhouse. Cornell was a collegiate hockey powerhouse.
  3. 3a person who is very strong and full of energy
  4. 4a type of food that provides a lot of energy Chicken turns this pizza into a protein powerhouse.
See the Oxford Advanced Learner's Dictionary entry: powerhouse