Pronunciation: (pō-lâr'is, -lar'-, pu-), [key]
1. Astron.the polestar or North Star, a star of the second magnitude situated close to the north pole of the heavens, in the constellation Ursa Minor: the outermost star in the handle of the Little Dipper.
2. a two-stage U.S. ballistic missile, usually fired from a submerged submarine.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.