look up any word, like plopping:
 
3.
According to wikipedia.
A.T.W.,
Urban Dictionary is an online Internet dictionary whose definitions are written by users.

according to me, it is the best thing ever.
by bryan C. June 23, 2007
 
1.
ATW
ATW sometimes written or spelled out "All The Way!" is a motivational phrase, expression or motto often used in the Special Operations and Airborne Community.
"Rangers Lead the Way Sir!" and the response would be "All The Way!". Or "ATW" Sir! and the response would be "Airborne!"
by 2-321 AFAR April 11, 2013
 
2.
Internet or texting shorthand for "Double Rainbow All the Way" referencing the popular internet meme in the summer of 2010. Used to convey pleasure or satisfaction.
Via text:

Todd: "Hey Brian, I finally got those tickets for the concert."

Brian: ((ATW!
by stickyalf August 05, 2010
 
4.
ATW
ATW stands for alt tab window, the window you set up to alt+tab into while doing NSFW stuff in an environment where you could be caught
Hey why'd you get fired

Doing NSFW stuff without setting up an ATW first

Ah yep
by pj:bolo November 14, 2010
 
5.
Atw
All the way (internet abbreviation)
For your favorite band, "Yeah man, Linkin Park atw!!"
by Daniel123456789 June 19, 2010
 
6.
ATW
Short for "Attention whore"

Usually used in forums where a user opens a thread for the sole purpose of attracting people's attention and/or provoke envy.
User 1: Hey, i bought a new laptop! Do you want to see it?

User 2: ATW
by albertsab April 06, 2009
 
7.
ATW
Meaning: All The Way
ryan: Dude! Lets Play the New Call of Duty!

Jim: Call Of Duty ATW!
by adeelies November 15, 2009