n. 1. A person with an unusual or odd personality; an eccentric person. [ informal ]
Syn. -- eccentric, eccentric person, geek. [ WordNet 1.5 ] 2. Hence: Anything unusual in its class. [ PJC ] Pluto is an oddball among its eight sister planets. It's the smallest in both size and mass, and has the most elliptical orbit. It moves in a plane tilted markedly away from the other planets' orbits. Moreover, Pluto is the only planet made almost entirely of ice. Ron Cohen (Science News, Feb. 27, 1999, p. 139) | 