Source : Webster's Revised Unabridged Dictionary (1913)

Caribbean \Car`ib*be"an\, Caribbee \Car`ib*bee\, a.
   Of or pertaining to the Caribs, to their islands (the eastern
   and southern West Indies), or to the sea (called the
   Caribbean sea) lying between those islands and Central
   America.

Source : WordNet®

Caribbean
     n 1: an arm of the Atlantic Ocean between North and South
          America; the origin of the Gulf stream [syn: {Caribbean
          Sea}]
     2: region including the Caribbean islands