a field on which the buildings of a university are situated
"The new library was built in the center of campus to serve all students and faculty."
The grounds or property of a school, college, university, business, church, or hospital, often understood to include buildings and other structures.
"The security guard patrolled the entire campus, ensuring that every building on the property remained locked after hours."
In plain English: A campus is the grounds where a school or university building and its students are located.
"Students walked across the campus to attend their morning lecture."
Usage: Use "campus" to refer specifically to the grounds and buildings where an educational institution like a school or university is located. Do not use it for general office parks, business complexes, or private property unless they function as a formal academic site.
To confine to campus as a punishment.
"The student was ordered to stay on campus for an extra week after skipping his midterms."
"The new students will campus on the green lawn to meet their orientation leaders."
Usage: Campus is rarely used as a verb in modern English and often appears incorrectly where authors mean to send someone away or banish them. Do not use it to describe confining someone to a school grounds; instead, choose words like exile, banish, or restrict for that meaning.
The word campus comes from the Latin campus, meaning "field." It entered English in the 1770s, specifically referring to the grounds of Princeton University.