Source : Webster's Revised Unabridged Dictionary (1913)

Andromeda \An*drom"e*da\, n. [L., fr. Gr. ?, the daughter of
   Cepheus and Cassiopeia. When bound to a rock and exposed to a
   sea monster, she was delivered by Perseus.]
   1. (Astron.) A northern constellation, supposed to represent
      the mythical Andromeda.

   2. (bot.) A genus of ericaceous flowering plants of northern
      climates, of which the original species was found growing
      on a rock surrounded by water.

Source : WordNet®

andromeda
     n 1: broad-leaved evergreen Asiatic shrub with glossy leaves and
          drooping clusters of white flowers [syn: {Japanese
          andromeda}, {lily-of-the-valley tree}, {Pieris japonica}]
     2: any of several shrubs of the genus Andromeda having leathery
        leaves and clusters of small flowers
     3: a constellation in the northern hemisphere between
        Cassiopeia and Pegasus; contains the Andromeda Galaxy