noun Date: 1706 a commissioned officer in the army, air force, or marine corps ranking above a second lieutenant and below a captain, a naval officer responsible for a ship's upkeep
FIRST LIEUTENANT
Meaning of FIRST LIEUTENANT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012