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]