[en-sahyn; Mil. en-suh
n] 
| 1. | a flag or banner, as a military or naval standard used to indicate nationality. |
| 2. | a badge of office or authority, as heraldic arms. |
| 3. | a sign, token, or emblem: the dove, an ensign of peace. |
| 4. | U.S. Navy and Coast Guard. the lowest commissioned officer, ranking next below a lieutenant, junior grade, and equal to a second lieutenant in the Army. |
| 5. | Archaic. standard-bearer (def. 1). |