Po·lar·is /pəˈlærəs, ˈlɑr-/
  北極星
  Po·la·ris n.  Astron. The polestar. See North star, under North.
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  Polaris
       n : 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 [syn: North Star, pole star, polar
           star, polestar]