1A fairly bright star located within one degree of the celestial north pole, in the constellation Ursa Minor. It is a triple star, the bright component of which is a cepheid variable.
Also called North Star, Polaris
1.1as nounA thing or principle that guides or attracts people.
the shop is a pole star for both actual and armchair travellers
Definition of Pole Star in US English:
Pole Star
proper noun
Astronomy
1A fairly bright star located within one degree of the celestial north pole, in the constellation Ursa Minor. It is a triple star, the bright component of which is a cepheid variable.
Also called North Star, Polaris
1.1as noun a pole starA thing or principle that guides or attracts people.
the store is a pole star for both actual and armchair travelers