ＦＢＩalso: エフビーアイFreq.FrequencyTop 10,000Meanings1nounFBI; Federal Bureau of InvestigationRefers to the U.S. Federal Bureau of Investigation. Used in Japanese media and conversation as a proper noun.ＦＢＩが事じ件けんの捜そう査さを始はじめた。The FBI began investigating the case.
