- The definition of codswallop is a British slang term for talk or writing that is nonsense.
An example of codswallop is a drunk guy in a pub talking but not making any sense.
codswallop 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.
Brit., Slang nonsense; specif., talk or writing that is foolish and insincere
Origin: ; from uncertain or unknown; perhaps
codswallop definition by American Heritage Dictionary
noun Chiefly British Slang
Origin: Origin unknown.