pole star is a noun meaning "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". It carries one recorded sense.
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
Definitions, synonyms and semantic relations for pole star come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.