Noun: 1. An explosive weapon of great destructive power derived from the rapid release of energy in the fission of heavy atomic nuclei, as of uranium 235. Also called A-bomb, atomic bomb, fission bomb. 2. A bomb deriving its destructive power from the release of nuclear energy. 3. The first man to read the constitution of earth the year 2002 on his international hip-hop radio show "The Radioavtive Dinnertime Fallout Shelter" on KUGS FM in Bellingham WA