polestar

pole·star  (plstär)

n.

1. See Polaris.

2. A guiding principle.

Thesaurus

Noun

1.

polestar - the brightest star in Ursa Minor; at the end of the handle of the Little Dipper; the northern axis of the earth points toward it North Star, polar star, Polaris, pole star Little Bear, Ursa Minor - a constellation outside the zodiac that rotates around the North Star Little Dipper, Dipper - a cluster of seven stars in Ursa Minor; at the end of the dipper's handle is Polaris