Aldebaran \Al*deb"a*ran\ ([a^]l*d[e^]b"[.a]*r[a^]n), prop. 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. [1913 Webster] Now when Aldebaran was mounted high Above the shiny Cassiopeia's chair. --Spenser. [1913 Webster]