alpha tau 

Alpha Tau is known to be a shortening of the sorority Alpha Sigma Tau. Alpha Sigma Tau is one of the oldest national sororities in the USA. It was founded in 1899.

Are those girls in Alpha Tau? Yea, Alpha Tau or Alpha Sigma Tau. It's the same sorority.

alpha tau by GillieTheKid February 5, 2017

Alpha Tau Omega 

Hot, smart, hard ass mothafuckas who have cast iron stomachs and blue and gold rods. We drink everyone under the table (including people from LSU), keep high GPAs, and get the hottest women. All in all, if you're a mean motherfucker with a penchant for brotherhood and fun, be an ATO.

{Ruh Rah Rega}

Ashton's an Alpha Tau Omega member, and he's fly as a motherfucker.

Alpha Tau Omega by ATO89 March 27, 2008

Alpha Tau Omega 

A national undergraduate college fraternity based upon leadership and character. Alpha Tau Omega builds character, ethics, and responsibility.

ATO consistently does community service events, fund raisers, and holds regional leadership conferences. Alpha Tau Omega is 100% haze free.

New chapters are required to be substance free, and the ATO national headquarters is in Indianapolis.

Man, I want want to rush Alpha Tau Omega!!!

Alpha Tau Omega by EtaPhi December 26, 2008

Alpha Tau Omega 

A fraternity otherwise known as ATO, in which the members proceed to rape women and also destroy not only the property of their house, but also the property of surrounding houses

Screw Alpha Tau Omega,those damn ATO's raped another chick this weekend.

Alpha Tau Omega by snowman29 June 21, 2006

ATO- Alpha Tau Omega

A fraternity based on brotherhood and spirituality that actually makes one part of the family. Mostly popular in the east coast and south, ATOs the country over are known for being the "nice guys" who end up dating the girls instead of just slaying. They are known for their vast interest in music, art, and the greater fine arts. Looking for true meaning in life, they are taught to live out their life day by day. Loved by many, hated by few, the ATOs are one of the largest fraternities in the United States, steadily growing and catching up to those that started before them. When one hears of an "ATO party", they know that anyone will be able to come because it is not a fraternity of douchebags such as sigma chi or PIKE- this goes along with part of their creed "to foster, not partisanship, but the recognition of true merit wherever found". Another deep interest of ATOs mostly in the west coast seems to be their love for dancing. This is clearly seen in this video of ATOs at UCSB dancing on youtube. This combined with their love of different types of music allows ATOs to throw the most fun parties on campus. Whenever a sorority girl or any lady in general needs help, they call up the ATOs- the nicest guyest on campus.

Guy 1: dude, can i go to that party or will i get kicked out for not being in the frat?

Guy 2: dude, they're ATOs, they like everyone unless you piss them off

Girl 1: hey i need help with getting this to my car

Girl 2: let me call up john, hes an ATO- Alpha Tau Omega, and their the nicest guys on campus

Girl 1: hey are jimmy and john ATOs?

Girl 2: ya howd you know?

Girl 1: cuz theyre so nice, cute, and amazing at dancing. id totally date them.

ATO- Alpha Tau Omega by couragethecowardly November 28, 2009

Chi Alpha Tau 

A TRUE female frat boy. When you see XAT letters it means respect. Will thrown down harder then you, drink more then you, kick you ass in beer pong, or just kick you ass entirely while still being hot. Has an uncanny ability to party harder then anyone the previous night, wake up unphased, and somehow the next day ace a test. If you ever date one hold on to her: because you will have your best friend and girlfriend in one.
Guy 1: Oh man I just meet this awesome girl who killed me in pong. I don't know whether to hit on her or bring her to Guy's Night. Do you know who she is?

Guy 2: Probably a Chi Alpha Tau girl.

Guy 1: Oh man I just meet this awesome girl who killed me in pong. I don't know whether to hit on her or bring her to Guy's Night. Do you know who she is?

Guy 2: Probably a Chi Alpha Tau girl.

Chi Alpha Tau by naddaboo February 25, 2008

Chi Alpha Tau 

A TRUE female frat boy. When you see XAT letters it means respect. Will thrown down harder then you, drink more then you, kick you ass in beer pong, or just kick you ass entirely while still being hot. Has an uncanny ability to party harder then anyone the previous night, wake up unphased, and somehow the next day ace a test. If you ever date one hold on to her: because you will have your best friend and girlfriend in one.

Guy 1: Oh man I just meet this awesome girl who killed me in pong. I don't know whether to hit on her or bring her to Guy's Night. Do you know who she is?

Guy 2: Probably a Chi Alpha Tau girl.

Chi Alpha Tau by naddaboo February 22, 2008