1. any of many minor planets in the Kuiper belt outside the orbit of Neptune at the edge of the solar system; [syn: Kuiper belt object, KBO]
WordNet (r) 3.0 (2006):
Kuiper belt object
n 1: any of many minor planets in the Kuiper belt outside the
orbit of Neptune at the edge of the solar system [syn:
Kuiper belt object, KBO]