1. a flag or banner, especially one displayed on a ship or by a military unit
2. the lowest-ranking commissioned officer in the U.S. Navy or Coast Guard
Usage: military
3. a symbol or sign of office, rank, or power

Examples

• The ship’s ensign flew proudly in the wind.
• The national ensign was raised at dawn.
• The newly graduated ensign reported for duty.
• She was promoted from ensign to lieutenant.
• The crown jewels are ensigns of royal authority.
• Each regiment carried its own distinctive ensign into battle.