fat lip(redirected from a fat lip)
A swollen lip, as from a punch or other trauma to the mouth. I have a fat lip because one of our opponents elbowed me in the mouth during our last game.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.