polestar

A guiding principle.

The star Polaris, of the second magnitude, situated near the north pole of the heavens.

Hence, that which serves as a guide or director; a lodestar.

In biology, a polar star; one of the two stellate figures which may be borne upon the poles of the fusiform nucleus-spindle in the process of karyokinesis.

Polaris, or the north star. See North star, under north.

A guide or director.

Alternative form of pole star.

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

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