[ˈdjuːti], (Noun)

Definitions:
- a moral or legal obligation; a responsibility
(e.g: it's my duty to uphold the law)

- a task or action that one is required to perform as part of one's job
(e.g: the queen's official duties)

- a payment levied on the import, export, manufacture, or sale of goods
(e.g: a 6 per cent duty on imports)

- the measure of an engine's effectiveness in units of work done per unit of fuel


Phrases:
- do duty as
- off duty
- on duty

Origin:
late Middle English: from Anglo-Norman French duete, from Old French deu (see due)