Definition:
: words or language having no meaning or conveying no intelligible ideas; drivel
Example:
"Some columnists even making claims that weight loss boosts sex drive and improves sleep (a snake oil salesman couldn't come up with a better pitch). Am I falling for all this codswallop?
— (letter to ed.) Birmingham Mail (Birmingham, Eng.), 23 Jan. 2023
About the Word:
Rumor has it that this 20th century British coinage was originally a derogatory name for products of one Hiram Codd, a 19th-century manufacturer of soft drinks. (Wallop is a colloquial term for "beer.") Evidence to back the story does not exist, though, and the origin of codswallop remains unknown.