The Collaborative International Dictionary of English v.0.48:

Pomegranate \Pome"gran`ate\ (?; 277), n. [OE. pomgarnet, OF.
   pome de grenate, F. grenade, L. pomum a fruit + granatus
   grained, having many grains or seeds. See Pome, and
   Garnet, Grain.]
   1. (Bot.) The fruit of the tree Punica Granatum; also, the
      tree itself (see Balaustine), which is native in the
      Orient, but is successfully cultivated in many warm
      countries, and as a house plant in colder climates. The
      fruit is as large as an orange, and has a hard rind
      containing many rather large seeds, each one separately
      covered with crimson, acid pulp.
      [1913 Webster]

   2. A carved or embroidered ornament resembling a pomegranate.
      --Ex. xxviii. 33.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Balaustine \Ba*laus"tine\, n. [L. balaustium, Gr. balay`stion.]
   (Bot.)
   The pomegranate tree (Punica granatum). The bark of the
   root, the rind of the fruit, and the flowers are used
   medicinally.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Punica granatum
    n 1: shrub or small tree native to southwestern Asia having
         large red many-seeded fruit [syn: pomegranate,
         pomegranate tree, Punica granatum]