- a canal extending SE from the Atlantic to the Pacific across the Isthmus of Panama. 40 miles (64 km) long.
- a canal across the Isthmus of Panama, linking the Atlantic and Pacific Oceans: extends from Colón on the Caribbean Sea southeast to Balboa on the Gulf of Panama; built by the US (1904–14), after an unsuccessful previous attempt (1880–89) by the French under de Lesseps. Length: 64 km (40 miles)
Waterway across the Isthmus of Panama. The canal connects the Atlantic Ocean and the Pacific Ocean. The United States built it from 1904 to 1914 on territory leased from Panama.