| 1. | a low-lying area bordering the Potomac River in Washington, D.C. |
| 2. | Informal. the U.S. Department of State, whose office building is located in this area. |
| Fog·gy Bottom (fŏg'ē) n. The U.S. Department of State. [From the location of the Department of State in a low-lying area of Washington, D.C., near the Potomac River.] |
A nickname for the United States Department of State, whose offices were built in a formerly swampy area of Washington, D.C., known as Foggy Bottom because of vapors rising from the swamp.