f-bomb (?f?b?m?)n. Slang The word fuck or one of its inflected forms: dropped the f-bomb during the live interview; an email filled with f-bombs.[On the model of A-bomb, H-bomb, etc.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.f-bomb n drop an f-bomb informal to use the word fuck in a situation where it will cause great offence [C20: a play on A-bomb and H-bomb, alluding to their explosive impact]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014