canopus

from WordNet (r) 3.0 (2006)

Canopus
    n 1: supergiant star 650 light years from Earth; second
         brightest star in the sky

from The Collaborative International Dictionary of English v.0.48

Canopus \Ca*no"pus\, n. [L. Canopus, fr. Gr. ?, town of Egypt.]
   (Astron.)
   A star of the first magnitude in the southern constellation
   Argo.
   [1913 Webster]