noun
ensign
EN-sun/ˈensən/
A commissioned naval officer below lieutenant junior grade.
The ensign reports to the lieutenant before taking the watch.

Etymology
The identifying mark became a badge of authority or a military flag. Ensign then named the soldier carrying that flag, and later a junior commissioned naval officer.
In context
I'm an Ensign in the United States Navy and a recent graduate of the University of Texas Naval ROTC.
I'll commission as an ensign in the Navy
More examples
- Two new ensigns joined the ship.
- She received her commission as an ensign.
- The ensign checked the signal equipment.
Forms
ensign · ensigns