isthmus of panama

from WordNet (r) 3.0 (2006)

Isthmus of Panama
    n 1: the isthmus that connects Central America and South
         America; was formerly called the Isthmus of Darien; "Balboa
         crossed the Isthmus of Darien" [syn: {Isthmus of Panama},
         {Isthmus of Darien}]