A more thorough explanation:

Definition: A position of duty, trust, or authority, especially one given by a government for a public purpose. For example, the office of the attorney general is a position of authority in the government.

Examples:

• The President of the United States holds the highest office in the country.
• Teachers hold the office of educating and guiding students.
• Police officers hold the office of protecting and serving their community.

These examples illustrate how an office is a position of authority or responsibility given to someone to carry out a specific task or duty. The President, teachers, and police officers all have different offices, but they are all positions of trust and authority that come with specific responsibilities and duties.