U.S. Government.
  1. Federal Bureau of Investigation: the federal agency charged with investigations for the Attorney General and with safeguarding national security.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for fbi

Contemporary Examples of fbi

Historical Examples of fbi

  • It is often suggested that investigation by the FBI might be the answer.

  • When the time was right, when he had the story locked, he'd go to the FBI with it.

    Ten From Infinity

    Paul W. Fairman

  • He would be out of business soon, once the FBI agent had got there.

    The Perfectionists

    Arnold Castle

  • Maybe all this about being an FBI agent was just a figment of his imagination.

    Out Like a Light

    Gordon Randall Garrett

  • He couldn't let the police get the wrong impression of FBI agents.

    Out Like a Light

    Gordon Randall Garrett

British Dictionary definitions for fbi


abbreviation for (in the US)
  1. Federal Bureau of Investigation; an agency of the Justice Department responsible for investigating violations of Federal laws
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

Word Origin and History for fbi


U.S. Federal Bureau of Investigation, formed 1935 from the former United States Bureau of Investigation (1908).

Online Etymology Dictionary, © 2010 Douglas Harper