pole star

¹

noun

1. a guiding principle, rule, standard, etc

Pole Star

²

noun

1. the Pole Star
   the Pole Star the star closest to the N celestial pole at any particular time. At present this is Polaris, but it will eventually be replaced by some other star owing to precession of the earth's axis

Example Sentences

In all this, he affirmed, his pole-star had been the happiness of his people, dearer to him than his own glory.

From Project Gutenberg

In the place of the mariners' compass let us read the "Bible," and, instead of the pole star, let us substitute "science."

From Project Gutenberg

In the north, round the pole-star are a number of constellations that never set; they wheel unceasingly around the pole.

From Project Gutenberg

In addition to its regular name, α Urs Minoris is frequently called by the special name Polaris, or the pole star.

From Project Gutenberg

The 'Pole Star' swung alongside her after the collision, and very soon afterwards sank in an almost parallel position.

From Project Gutenberg