Etymology: Middle English, from Anglo-French, from Latin officium service, duty, office, from opus work + facere to make, do — more at operate, do
Date: 13th century
1 a: a special duty, charge, or position conferred by an exercise of governmental authority and for a public purpose : a position of authority to exercise a public function and to receive whatever emoluments may belong to it b: a position of responsibility or some degree of executive authority 2[Middle English, from Anglo-French, from Late Latin officium, from Latin]: a prescribed form or service of worship; specificallycapitalized:divine office 3: a religious or social ceremonial observance :rite 4 a: something that one ought to do or must do : an assigned or assumed duty, task, or role b: the proper or customary action of something :functionc: something done for another :service 5: a place where a particular kind of business is transacted or a service is supplied: as a: a place in which the functions of a public officer are performed b: the directing headquarters of an enterprise or organization c: the place in which a professional person conducts business 6pluralchiefly British: the apartments, attached buildings, or outhouses in which the activities attached to the service of a house are carried on 7 a: a major administrative unit in some governments <British Foreign Office>b: a subdivision of some government departments <Patent Office>