duty
//ˈdjuːti//
Noun
dutySingular
dutiesPlural
1
A moral or legal obligation; a responsibility or task that one is required or expected to perform
It is my duty to take care of my parents.
2
Work or service performed as part of one's job or role
The nurse performed her duties with care and professionalism.
3
A tax levied on goods, especially imports or exports
You have to pay duty on imported wine.
4
The state of being actively engaged in one's work or responsibilities (especially in phrases like 'on duty' or 'off duty')
The nurse is on duty until 8 p.m. tonight.