Definitions

1. noun

A junior naval officer ranking above a midshipman and below a sub-lieutenant, typically in training for promotion to commissioned officer rank.

“He was appointed as an ensign on a US Navy destroyer.”

2. noun

A flag or emblem carried by a ship, especially to indicate its nationality, status, or purpose.

“The ensign of the British Navy was prominently displayed on the ship’s stern.”

3. verb

To serve as or function as an ensign, especially on a ship.

“She ensigns as a junior officer on a merchant vessel.”