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first officer

American  
first officer British  

noun

  1. another name for first mate

  2. the member of an aircraft crew who is second in command to the 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

Example Sentences

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The captain and his first officer were taken into police custody in early October before returning to sea.

From Barron's Feb. 23, 2026

The animation showed what Sam Lilley, the first officer of American Airlines Flight 5342, likely saw, the National Transportation Safety Board believes.

From The Wall Street Journal Feb. 14, 2026

She knelt in front of the first officer she saw, told him she’d fled the colectivos, and pleaded for a chance to seek asylum.

From Slate Jan. 15, 2026

That indirectly-reported exchange sparked intense speculation about the role of the two pilots, Captain Sumeet Sabharwal and his first officer Clive Kunder, who was flying the plane at the time.

From BBC Nov. 7, 2025

Chekov, the Russian ensign; Sulu, the Japanese American helmsman; and the half-human, half-Vulcan first officer, Mr. Spock, added an interstellar touch of diversity.

From "Hidden Figures" by Margot Lee Shetterly

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