Top definition
Short for Excess. Used in Science like chemisty.
There is .05 mL of NaOH3
There for NaOH3 XS
by Deathstar2x April 21, 2005
Happy St. Patties Day!
A smiley face that can be used to express stress, embarrassment, or just when someone is trying to be cute!

Used in the same circumstances as >.<
Person A: I have 3 essays due in next week! XS

Person B: You think thats bad? I have 4, aaaand i just walked into a door! XS
by Paigeyykins January 10, 2010
Happy St. Patties Day!
XS stands for Xiaolin Showdown. Originally airing on the Kids WB! block of programming on WB Network in 2003, the series ran for 3 seasons and 52 episodes. Typical episodes revolve around a specific Shen Gong Wu being revealed which results in both sides racing to find it. Episodes usually reach a head when one good and one evil character must challenge each other to a magical duel called a Xiaolin Showdown for possession of the artifact.
Hey! It's Chase Young from XS!
by Tinker Binker November 23, 2010
Happy St. Patties Day!
When referring to extra-small, a size of clothing.
It's usually hard to find xs clothing, since everyone in America's xxl.
by Loose Translation June 27, 2005
Happy St. Patties Day!