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1.
Slang term for evangelical atheists, who are always trying to convert you to atheism. A take-off on Jehovah's Witness, who are always coming around trying to convert you. These guys are the same thing in reverse, preaching Richard Dawkins to anyone who will listen.
Man, a Dawkins' Witness just came by my cubical preaching again. I couldn't get rid of him.
by DelawareGuy December 12, 2007
 
2.
A person with sufficient sophistication to recognize religion as the greatest threat to human civilization, and shares this fact with others.
Dr. of Biology- Creationism is religious propaganda and only retards public education.
Random dude-You must be a "Dawkins' Witness"
by JoeyMarvelous September 07, 2008