The Collaborative International Dictionary of English v.0.48:

Calabash \Cal"a*bash\ (k[a^]l"[.a]*b[a^]sh), n. [Sp. calabaza,
   or Pg. calaba[,c]a, caba[,c]a (cf. F. Calebasse), lit., a dry
   gourd, fr. Ar. qar', fem., a kind of gourd + aibas dry.]
   1. The common gourd (plant or fruit).
      [1913 Webster]

   2. The fruit of the calabash tree.
      [1913 Webster]

   3. A water dipper, bottle, bascket, or other utensil, made
      from the dry shell of a calabash or gourd.
      [1913 Webster]

   Calabash tree. (Bot.), a tree of tropical America
      (Crescentia cujete), producing a large gourdlike fruit,
      containing a purgative pulp. Its hard shell, after the
      removal of the pulp, is used for cups, bottles, etc. The
      African calabash tree is the baobab.
      [1913 Webster]

WordNet (r) 3.0 (2006):

calabash
    n 1: round gourd of the calabash tree
    2: tropical American evergreen that produces large round gourds
       [syn: calabash, calabash tree, Crescentia cujete]
    3: Old World climbing plant with hard-shelled bottle-shaped
       gourds as fruits [syn: bottle gourd, calabash, Lagenaria
       siceraria]
    4: bottle made from the dried shell of a bottle gourd [syn:
       gourd, calabash]
    5: a pipe for smoking; has a curved stem and a large bowl made
       from a calabash gourd [syn: calabash, calabash pipe]

U.S. Gazetteer Places (2000):

Calabash, NC -- U.S. town in North Carolina
   Population (2000):    711
   Housing Units (2000): 508
   Land area (2000):     1.417715 sq. miles (3.671864 sq. km)
   Water area (2000):    0.096456 sq. miles (0.249820 sq. km)
   Total area (2000):    1.514171 sq. miles (3.921684 sq. km)
   FIPS code:            09540
   Located within:       North Carolina (NC), FIPS 37
   Location:             33.892619 N, 78.566547 W
   ZIP Codes (1990):     28467
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Calabash, NC
    Calabash