\Al*deb"a*ran\, n. [Ar. al-debar[=a]n, fr. dabar to
follow; so called because this star follows upon the
Pleiades.] (Astron.)
A red star of the first magnitude, situated in the eye of
Taurus; the Bull's Eye. It is the bright star in the group
called the Hyades.

      Now when Aldebaran was mounted high Above the shiny
      Cassiopeia's chair.                      --Spenser.