WordNet
n. a center for student activities at a college or university
Wikipedia
A student center is a type of building found on university campuses. In the United States, such a building may be called a student union, student commons, union or student center. The term "student union" refers most often in the United States to a building, while in other nations a " students' union" is the student government. Nevertheless, the Association of College Unions International (largely US-based) has several hundred campus organizational members in the US; there is no sharp dichotomy in interpretation of union in this context. The US usage in reference to a location is simply a shortened form of student union building.
The first student union built at a public university in the United States was the Ohio Union (1910) at the Ohio State University. The largest student union is at Oklahoma State University, Stillwater, Oklahoma.
Usage examples of "student center".
The Baptist student center, incongruously set between two of the rowdiest fraternity houses, was also closed.
They're supposed to be renovating it as a student center, but there isn't enough money.
I can't remember when either of them has come alone to the Sunday evening potlucks at the Unitarian student center.
One morning I was doing some work at the student center, and I hadn’.
I saw a squall line coming at me down the street, but was providentially right by the Student Center.
But beyond that the fourth floor of the student center looked untouched.