- an officer holding the lowest commissioned rank in the armed forces of certain nations
WordReference Random House Unabridged Dictionary of American English © 2026
sec′ond lieuten′ant, [U.S. Mil.]
- Militaryan Army, Air Force, or Marine officer of the lowest commissioned rank. Cf. ensign (def. 4).
- 1695–1705
Collins Concise English Dictionary © HarperCollins Publishers::
second lieutenant n
'second lieutenant' also found in these entries (note: many are not synonyms or translations):