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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

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

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

She was the first officer to pursue the defendant down the alleyway.

From BBC • Jun. 10, 2025

The first officer would not have dared to use one of the more intimate or familiar forms when he addressed the captain.

From "Outliers" by Malcolm Gladwell