Definition of "Polaris"

Polaris

/pɔʊˈlɑɹɪs/

proper noun
1. (astronomy) α Ursae Minoris, a trinary star in the constellation Ursa Minor located near the north celestial pole for the last 1500 years.
2. A type of U.S. ballistic missile, capable of carrying a nuclear warhead and designed to be launched from a submarine.
  Quotations
  Tremble, you weaklings, cower in fear / I am your ruler — land, sea, and air / Immense in my girth, erect I stand tall / I am a nuclear murderer, I am Polaris"
  1990, “Rust in Peace… Polaris”, in Dave Mustaine (lyrics), Dave Mustaine (music), Rust in Peace, performed by Megadeth