404

Etymology
From the HTTP error status code 404, meaning Not Found, returned by a web server responding to a request for a URL at which no resource exists.

Adjective

 * 1)  Not found, especially of a web page on the Internet.

Noun

 * 1)  An error indicating that a web page could not be found.
 * 2)  Dog meat.
 * 1)  Dog meat.

Verb

 * 1)  To return an error indicating that a web page could not be found.

Verb

 * 1)   to be censored; to be removed