something you feel you must do because of law, your job, or moral principles
It's a soldier's duty to protect their country.
She felt it was her duty to tell the truth, even if it hurt.
the tasks and responsibilities that are part of someone’s job or role
One of the receptionist's duties is to answer the phone politely.
The nurse went off duty at six o'clock.
a tax that must be paid on goods brought into or sold inside a country
You must pay import duty on that expensive watch.
Customs officers calculated the duty before releasing the goods.
