| Noun | 1. | Powell - United States general who was the first Black to serve as Chief of Staff; later served as Secretary of State under President George W. Bush (born 1937) Synonyms: Colin luther Powell, Colin Powell |
| 2. | Powell - English physicist who discovered the pion (the first known meson) which is a subatomic particle involved in holding the nucleus together (1903-1969) Synonyms: Cecil Frank Powell |
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