Learner's definition of CAMPUS
: the area and buildings around a university, college, school, etc.
Visitors crowded the campus on graduation day.
Rallies were held on college/university campuses across the country.
We walked around the campus on our first day.
— often used before another noun
How do you like living on campus? [=in the dormitories/housing provided by the school]
She prefers living off campus. [=she prefers not living in the dormitories/housing provided by the school]
(US, somewhat old-fashioned) The quarterback of the football team is a real big man on campus. [=he is important and well-known]