Definition of Pole Star in 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. 1.1as noun A thing or principle that guides or attracts people.
      ‘the shop is a pole star for both actual and armchair travellers’