404

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

Adjective

  1. Not found, especially of a web page on the Internet.
    • Bill was 404 all morning.

Origin

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.

Noun

  1. An error indicating that a web page could not be found.
    • Return 404s for all deleted pages. Some search engine marketers suggest redirecting old products to semantically related products instead of 404ing. This preserves link equity, whereas a 404 does not. - 2007, Cristian...
  2. Dog meat.

Forms

404s

Derived

404 page soft 404

Verb

  1. To return an error indicating that a web page could not be found.
    • Return 404s for all deleted pages. Some search engine marketers suggest redirecting old products to semantically related products instead of 404ing. This preserves link equity, whereas a 404 does not. - 2007, Cristian...

Forms

404s 404ing 404ed 404'd

Related

four oh four