The Definition of “Dust Jacket”

On January 22, 2022 Mike votava wrote on his blog:
Webster’s Dictionary defines a dust jacket as:
A Dust Jacket is a stupid annoying thing that covers a hardcover book. It does not actually protect the book from getting covered in dust. A dust jacket is just a clever name for this marketing tool designed to help sell the book. Dust jackets are also used to annoy the crap out of Mike Votava. They are really good at that.
I have checked the facts, and even though that it is true that dust jackets are good at annoying Mr. Mike Votava, most of the above statement is false.
Websters Dictionary defines a dust jacket as “a paper cover for a book”
Consider this fact to be officially checked.