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8.
AT
acronym for the term "Advanced Technique." Used in various video games including, but not limited to, Smash Bros.
In Super Smash Bros. Melee, WaveDashing is an AT.
by MarkoManX September 28, 2008
 
9.
at
A person who genuinely and seriously calls out somebody's legitimate complaint as a first world problem as a means of trivialising them and their complaint, usually to obtain a smug sense of moral superiority because of how 'in touch' they are with the 'plight of the underprivileged'.
Dave: "Great, my air conditioner just died in the middle of a heatwave! This sucks."
Twat: "This is such a first world problem. At least you have a house and clothes, and perpetual access to the internet on your smartphone to make these status updates."
Dave: "Don't be such a first world twat."
by Cult Kitten January 15, 2014
 
10.
AT
AT- stands for anti-tank, as in antitak weapon, rpg (rocket propelled grenade) or panzerfaust
Take that Panther out w/ the AT.
by Dung30n July 27, 2004
 
11.
AT
Type of motherboard
I have an AT motherboard in my 8086 baby.
by Matt Seigel November 05, 2003
 
12.
AT
after tax
The sushi was only $5 AT!
by jono019473920 September 06, 2011
 
13.
AT
sometimes a nick name for Athena- most of the time is called that by good friends and/or body guard of the moment
hey at! when are you coming to lunch?
by theycallmeWaLlY February 11, 2009
 
14.
AT
Academic Team - An Olds, AB, Canada, self directed program.
An Olds, AB, Canada, self directed program.
by Brett Dibble April 17, 2005