Chi Alpha Tau is a local Sorority at Millersville University. XAT was founded on October 23, 1984. The sorority motto is "Lasting Friendship and Service to Others." The sorority colors are Aqua and Black, with Opal as the Gem. Chi Alpha Tau's mascot is a black cat with aqua eyes.

Chi Alpha Tau is a social service sorority, not a "female frat boy".
Sisters of Chi Alpha Tau are classy, driven women. The bond of sisterhood lasts forever.
by xat sister February 6, 2010
Get the Chi Alpha Tau mug.
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.
by couragethecowardly November 28, 2009
Get the ATO- Alpha Tau Omega mug.
Founded in 1899, Alpha Sigma Tau is a national sorority for women, dedicated to promote the ethical, cultural, and social development of its members. This sorority has close philanthropic ties to the Pine Mountain Settlement School in Harlan County, Kentucky as well as Habitat for Humanity.

They are your roommate, your neighbor down the hall, a classmate or a friendly face in a sea of strangers on campus. Look for them studying in the library, volunteering for local charities, working on campus, shopping in the city and proudly wearing their letters.
alpha sigma tau girls are gorgeous, intelligent, and definitely know how to party ;)
by beachypeach March 25, 2010
Get the Alpha Sigma Tau mug.
AST's are like female frat boys. you can find them on almost any night of the week doing a keg stand, kicking your ass in beer pong or doing a power hour. if you piss them off they will take one of their rusty anchors and show it up your ass! hottest, bitchiest girls alive
random girl: whos that slut doing a keg stang
friend: probably an AST, dont be jealous just beacuse they didnt give you a bid
by colin February 26, 2005
Get the alpha sigma tau mug.
you can't spell fantASTtic without AST!
There may be a couple other words you can spell with AST, but this is a personal favorite of mine
by turtle 1 February 26, 2005
Get the alpha sigma tau mug.
The hottest sorority known to man... best looking girls, best dancers, biggest drinkers... a parties not a party unless the AST's are there!
Frat Guy: Holy Shit, look at those hot girls dancing on that table, they must be AST's
by Liam February 24, 2005
Get the alpha sigma tau mug.
Alpha Sigma Tau is the best sorority around with the hottest girls who are the best drinkers dancers and partiers on the face of this planet.
Holy Shit! Those hot girls dancing on the table must be AST's! I want their hot bodies!!!
by Regan Smith February 24, 2005
Get the Alpha Sigma Tau mug.