a person who holds a commissioned rank in the United States Navy or the United States Coast Guard; below lieutenant junior grade
"The new ensign stood at attention during his first day of duty on the cutter, eager to learn from the senior officers."
an emblem flown as a symbol of nationality
"The crew gathered on deck to watch the national ensign rise against the morning sky."
colors flown by a ship to show its nationality
"The naval officer ordered the ensign to be raised at dawn so every passing merchant could identify our ship's allegiance."
A badge of office, rank, or power.
"The new commander pinned his ensign to his lapel before addressing the crew at dawn."
To designate as by an ensign.
"The crew saluted when the captain designated the young sailor as his personal ensign for the upcoming voyage."
A surname.
"The local history club recently invited Mr. Ensign to speak about his family's role in the maritime trade during the 1800s."