first lieutenant


noun Military.

an officer ranking next above second lieutenant and next below a captain.

Origin of first lieutenant

First recorded in 1775–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for first lieutenant

first lieutenant


noun

the officer responsible for the upkeep and maintenance of a warship, esp the executive officer of a smaller ship in the Royal Navy
an officer holding commissioned rank in the US Army, Air Force, Marine Corps, or in certain other forces, senior to a second lieutenant and junior to a captain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012