catchment area

Từ điển Oxford Advanced Learner 8th

catch·ment area [catchment area] BrE [ˈkætʃmənt eəriə] NAmE [ˈkætʃmənt eriə] noun
1. (BrE)the area from which a school takes its students, a hospital its patients, etc.
2. (also catch·ment) (technical)the area from which rain flows into a particular river or lake