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first lieutenant

American  

noun

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


first lieutenant British  

noun

  1. the officer responsible for the upkeep and maintenance of a warship, esp the executive officer of a smaller ship in the Royal Navy

  2. 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

Etymology

Origin of first lieutenant

First recorded in 1775–85


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

He began his work at the modest rank of first lieutenant, though he would be made a captain in 1941.

From The Wall Street Journal ● Oct. 6, 2026

They include a letter from Marie Dubosc to her husband, the ship's first lieutenant, Louis Chambrelan.

From BBC ● Nov. 7, 2023

“I felt stupid the way I walk around and stumble,” said Kalfon, who led a medical aid unit as a first lieutenant in 1964-65.

From Seattle Times ● Jun. 10, 2023

He volunteered for two years in the Army’s Chaplain Corps at Fort Sill, Okla., where he became a first lieutenant.

From New York Times ● Apr. 28, 2023

As a first lieutenant and platoon leader, Jimmy Cross carried a compass, maps, code books, binoculars, and a .45-caliber pistol that weighed 2.9 pounds fully loaded.

From "The Things They Carried" by Tim O'Brien

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