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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.

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On Tuesday, the Journal reported that the Federal Bureau of Investigation was investigating the Brooklyn, N.Y.-based autism-therapy company.

From The Wall Street Journal ● Nov. 5, 2026

The National Security Agency and Federal Bureau of Investigation have told companies that couldn’t immediately patch the web bugs to simply pull the plug on their websites.

From The Wall Street Journal ● Oct. 24, 2026

She denies wrongdoing, and the Federal Bureau of Investigation questioned the veracity of the felon’s account and closed its inquiry.

From The Wall Street Journal ● Oct. 16, 2026

Or file a report with the Internet Crime Complaint Center, a division of the Federal Bureau of Investigation.

From MarketWatch ● Oct. 6, 2026

He realized that after so many years of hunches and suspicions, the time had come to bring in the experts, the spy hunters of the Federal Bureau of Investigation.

From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau

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