aggie

Etymology 1
From.

Noun

 * 1)  Marble or a marble made of agate, or one that looks as if it were made of agate.
 * 2) * 1950, The Martian Chronicles, :
 * Never seen so many children out. Snowmen in every yard this year. Look at mine, Mr Willis. Got a baseball for a nose and my best aggies for eyes.  Yeah, marbles are fine—but in my day we used coal.

Etymology 2
From.

Noun

 * 1)  An agricultural school, such as one of the state land-grant colleges.
 * 2)  A student or alumnus of such a school.