department

♦♦♦ de|part|ment /dɪp'ɑːrtmənt/ (departments)
1 [N-COUNT] usu with supp
A department is one of the sections in an organization such as a government, business, or university. A department is also one of the sections in a large shop.
...the U.S. Department of Health, Education and Welfare...
He moved to the sales department.
...the jewelry department.
2 [PHRASE] V inflects
If you say that a task or area of knowledge is not your department, you mean that you are not responsible for it or do not know much about it.
`I'm afraid the name means nothing to me,' he said. `That's not my department.'de|part|ment store (department stores)
[N-COUNT]
A department store is a large shop which sells many different kinds of goods.fire de|part|ment (fire departments)
[N-COUNT-COLL] usu the N
The fire department is an organization which has the job of putting out fires. (AM; in BRIT, use fire service)