毕宿五

[ noun ]
the brightest star in Taurus
<noun.object>

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.

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