Informal A proponent of liberation for a group.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "libber" in a sentence
"Maybe somebody on the right can give us all a logical and I empha logical explanation of why the so-called "libber media" would want to destroy the Herminator"
"The vaudeville star Eddie Cantor called Linkletter the best ad-libber in radio."
"June 4, 2009 at 12:03 pm sounz lyke libber pickled in Guiness."