- FB is defined as an abbreviation for Facebook, a social networking site.
An example of FB is the way you talk about Facebook on Twitter, using the hashtag #fb.
fb definition by Webster's New World
fb definition by American Heritage Dictionary
abbreviationThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- foreign body
- freight bill
fb - Computer Definition
Variant of FB