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Federal Bureau of Investigation

British  

noun

  1. See FBI

"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

Federal Bureau of Investigation Cultural  
  1. An agency of the United States federal government, long headed by J. Edgar Hoover, which investigates violations of federal (rather than state or local) laws, including kidnaping, smuggling narcotics, and espionage.


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Established in 1908 under the Department of Justice, the FBI earned its reputation in the 1920s and 1930s by apprehending notorious bank robbers and gangsters.

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:

In a social-media post on Sunday morning, Federal Bureau of Investigation Director Kash Patel said his agency “is assisting local authorities and has made every necessary resource available.”

From The Wall Street Journal Jul. 12, 2026

The agency didn’t say where the shooting took place but said the Federal Bureau of Investigation in Houston was investigating the potential assault of a federal law enforcement officer.

From The Wall Street Journal Jul. 8, 2026

Hamas, the U.S.-designated terrorist group and Iran ally, has asked for donations in crypto, according to the Federal Bureau of Investigation.

From The Wall Street Journal Jul. 4, 2026

The Federal Bureau of Investigation has also "seized over 500 of those drones, to process as evidence in FBI investigations," Doug Olson, the FBI's special agent responsible for coordination around the 2026 World Cup.

From Barron's Jun. 29, 2026

The New York police passed the hollow nickel on to the Federal Bureau of Investigation.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

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