a specialized sphere of knowledge; "baking is not my department"; "his work established a new department of literature"専門化された知識の範囲分野
例:his work established a new department of literature 彼の作品は文学に新しい分野を確立した
the territorial and administrative division of some countries (such as France)(フランスなどの)いくつかの国の地域管区および行政管区省
a specialized division of a large organization; "you'll find it in the hardware department"; "she got a job in the historical section of the Treasury"大きな組織の専門化された部門部門