I. Po‧la‧ris¹ /pəˈlɑːrəs, pəˈlɑːrɪs $ -ˈlæ-/
a ballistic missile (=a flying weapon) fired from a submarine, which was developed in the US in the 1950s and 1960s and is a NUCLEAR WEAPON. Polaris missiles were kept by the military forces of the US and the UK until the 1990s, when they were replaced by Trident missiles.

[TahlilGaran] Dictionary of Contemporary English ▲

II. Polaris²
another name for the Pole Star

[TahlilGaran] Dictionary of Contemporary English ▲