duty (EN)

noun

noun “duty”

1. something that one is expected or required to do; a moral or legal obligation
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   It's our duty to protect the environment for future generations.
2. a period of time when a person works and is responsible for specific tasks; a work shift
   The security guard is on duty during the night.
3. a tax that must be paid on certain goods when they are imported or exported
   The customs officer asked if we had anything to declare to pay duty on.