polestar

[ pohl-stahr ]
/ ˈpoʊlˌstɑr /

noun

something that serves as a guiding principle.
something that is the center of attention or attraction.

Origin of polestar

First recorded in 1545–55; pole2 + star

British Dictionary definitions for pole star (1 of 2)

pole star

noun

a guiding principle, rule, standard, etc

British Dictionary definitions for pole star (2 of 2)

Pole Star

noun

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