| Noun | 1. | Polaris - the brightest star in Ursa Minor; at the end of the handle of the little dipper; the northern axis of the earth points toward itLittle Dipper, Dipper - a cluster of seven stars in Ursa Minor; at the end of the dipper's handle is Polaris loadstar, lodestar - guiding star; a star that is used as a reference point in navigation of astronomy | |