The Collaborative International Dictionary of English v.0.48:

Corsica \Corsica\ n.
   1. an island in the Mediterranean; with adjacent islets it
      constitutes a region of France.

   Syn: Corse.
        [WordNet 1.5]

   2. a region of France.

   Syn: Corse.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Corsica
    n 1: an island in the Mediterranean; with adjacent islets it
         constitutes a region of France [syn: Corse, Corsica]
    2: a region of France on the island of Corsica; birthplace of
       Napoleon Bonaparte [syn: Corse, Corsica]

U.S. Gazetteer Places (2000):

Corsica, PA -- U.S. borough in Pennsylvania
   Population (2000):    354
   Housing Units (2000): 157
   Land area (2000):     0.466479 sq. miles (1.208174 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.466479 sq. miles (1.208174 sq. km)
   FIPS code:            16304
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             41.181233 N, 79.202287 W
   ZIP Codes (1990):     15829
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Corsica, PA
    Corsica


U.S. Gazetteer Places (2000):

Corsica, SD -- U.S. city in South Dakota
   Population (2000):    644
   Housing Units (2000): 271
   Land area (2000):     0.665726 sq. miles (1.724223 sq. km)
   Water area (2000):    0.004939 sq. miles (0.012793 sq. km)
   Total area (2000):    0.670665 sq. miles (1.737016 sq. km)
   FIPS code:            13980
   Located within:       South Dakota (SD), FIPS 46
   Location:             43.424328 N, 98.406032 W
   ZIP Codes (1990):     57328
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Corsica, SD
    Corsica