1 definition by Althir

A door (or other object) is "knockless" when knocking does not have any audible result.
Originates from Ctr+Alt+Delete from 16-08-2004.
You know, I'm THIS close to buying one of those knockless doors. You know, those big rubber ones?
by Althir May 20, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×