| 1. | of or pertaining to the Atlantic Ocean. |
| 2. | of, pertaining to, or situated on the eastern seaboard of the U.S.: the Atlantic states. |
| 3. | of or pertaining to the countries bordering the Atlantic Ocean, esp. those of North America and Europe. |
| 4. | of or pertaining to the North Atlantic Treaty Organization or its members: the Atlantic Alliance. |
| 5. | Atlantic Ocean. |
| 6. | Railroads. a steam locomotive having a four-wheeled front truck, four driving wheels, and a two-wheeled rear truck. |