Polaris

 
Pronunciation: /pəˈlɑːrɪs/
  • 1 Astronomy the Pole Star.
  • 2a type of submarine-launched ballistic missile designed to carry nuclear warheads, formerly in service with the US and British navies.

Origin:

mid 19th century: from medieval Latin polaris 'heavenly', from Latin polus 'end of an axis'