campus

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The grounds and buildings of an institution, especially a college or other institution of learning, a hospital, or a corporation.

from The Century Dictionary.

• noun The green upon or about which the buildings of an American college or university generally stand; the college-yard.

from the GNU version of the Collaborative International Dictionary of English.

• noun The principal grounds of a college or school, between the buildings or within the main inclosure.
• noun a college or university.
• noun a division of a university with its own buildings and a separate faculty, especially one separated geographically from other divisiona, but sharing top administration with other units of the university.
• noun higher education considered as a whole.
• noun a business site with pleasant landscaping.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The grounds or property of a school, college, university, business, church, or hospital, often understood to include buildings and other structures.
• noun An institution of higher education and its ambiance.
• verb To confine to campus as a punishment.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a field on which the buildings of a university are situated