- The definition of a blowhard is a person who boasts in an obnoxious or unpleasant way.
Someone who is constantly telling you how much money he has and how great he is to the point where it really annoys you is an example of a blowhard.
blowhard definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Slang a loudly boastful person
blowhard definition by American Heritage Dictionary
A boaster or braggart.