Newbtube 

The Newbtube is a nickname for the Gernade Launcher attachment in the Call of Duty series. It is named that because newbies tend to use it as their only way to get kills, because it will kill their opponents in one shot.

I'm playing like crap, I'll use the Newbtube to get some quick kills.

Newbtube by Fitty4ex May 22, 2008

newtuber 

Someone who is new to youtube. This can include anyone who has just started posting videos, commenting, etc.

Jon: Hey Stephen, this video is awesome. Have you seen this guy before?

Stephen: No, I think he's a newtuber.

newtuber by *Sylvia January 7, 2008

newtube 

Term for new Youtube favorites. Generally said to Youtube friends.

Check out my newtubes.

newtube by bidd January 18, 2009

newb tube 

A granade launcher in Call Of Duty 4 and WAW. Which takes no skill to use so people that are new to the game or just not good at it use.

That newb shot me with his newb tube

newb tube by cagrown760 March 27, 2009

newb tube 

Grenade launcher, found in Call of Duty 4: Modern Warfare

"That kid just shot me with his newb tube!"

newb tube by Bojay Blues June 21, 2008