ensign

ot noun

1. A badge of office, rank, or power.
2. The lowest grade of commissioned officer in the United States Navy, junior to a lieutenant junior grade.
3. A flag or banner carried by military units; a standard or color/colour.
4. The principal flag or banner flown by a ship (usually at the stern) to indicate nationality.

fe’l verb

1. To distinguish by an ornament, especially by a crown. Any charge which has a crown immediately above or upon it, is said to be ensigned.
2. To designate as by an ensign.
3. To distinguish by a mark or ornament.