It's called an array.
var array:Array = new Array ( 'lol', 'lol2', 'lol3' );
// array[0] is lol, array[1] is 'lol2', and array[2] is 'lol3'
//Or the lazy way to write it, which is still acceptable:
array = new Array ('lol','lol2','lol3');
/// Even lazier, but more work:
array[0]='lol';
array[1]='lol2';
array[2]='lol3';
// And dimensional arrays:
var array:Array = [
['lol', 'lol', 'lol' ],
['lol', 'lol', 'lol' ],
['lol', 'lol', 'lol' ]
];
// array[0][0] is 'lol', array[0][1] is lol, array [0][2] is lol
// array[1][0] is 'lol', array[1][1] is lol, array [1][2] is lol
// array[2][0] is 'lol', array[2][1] is lol, array [2][2] is lol