Source : WordNet®

Powell
     n 1: 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) [syn: {Colin Powell},
           {Colin luther Powell}]
     2: English physicist who discovered the pion (the first known
        meson) which is a subatomic particle involved in holding
        the nucleus together (1903-1969) [syn: {Cecil Frank Powell}]