Gatun Lake
noun
an artificial lake in the Canal Zone, forming part of the Panama Canal: created by the Gatun dam. 164 sq. mi. (425 sq. km).
British Dictionary definitions for gatun lake
Gatún Lake
/ (Spanish ɡaˈtun) /
noun
a lake in Panama, part of the Panama Canal: formed in 1912 on the completion of the Gatún Dam across the Chagres River. Area: 424 sq km (164 sq miles)