noun
school store; co-op; purchasing department
Refers to a shop or purchasing section within a school, company, or organization. In a school context, it is the student store selling supplies and snacks. In a business context, it can mean the procurement department.
昼休みに購買部でパンを買った。
I bought bread at the school store during lunch break.
購買部に文房具の注文を出した。
I placed an order for stationery with the purchasing department.