| Date: | 1200-1300 |
| Language: | Anglo-French |
| Origin: | dueté, from Old French deu; DUE1 |
1 something that you have to do because it is morally or legally right [= obligation]COLLOCATIONS 
do your duty it is somebody's duty to do something have a duty to do something have a duty to somebody/owe somebody a duty sense of duty moral duty legal duty fail in your duty (=fail to do something that you should do for someone) be duty-bound to do something formal (=have a duty to do something)
You have a duty to your husband and to your children.
something you must do
[uncountable and countable]
do your duty it is somebody's duty to do something have a duty to do something have a duty to somebody/owe somebody a duty sense of duty moral duty legal duty fail in your duty (=fail to do something that you should do for someone) be duty-bound to do something formal (=have a duty to do something)
You have a duty to your husband and to your children.2 something you have to do as part of your job
When Juliet reported for duty (=arrived and said she was ready to start work) she was sent to check on a new patient.
He did three tours of duty in Vietnam (=three periods working in a foreign country as a soldier, government officer etc).
work
[countable usually plural, uncountable] duties
Martin's duties included cleaning the cars.
She works for her father doing part-time secretarial duties.
Martin's duties included cleaning the cars.
She works for her father doing part-time secretarial duties.
When Juliet reported for duty (=arrived and said she was ready to start work) she was sent to check on a new patient.
He did three tours of duty in Vietnam (=three periods working in a foreign country as a soldier, government officer etc).3 to be working or not working at a particular time, especially when you are doing a job which people take turns to do, so that someone is always doing it :
be on/off duty
4 a tax you pay on something you buy
tax
[uncountable and countable]PET customs duty (=tax paid on goods coming into the country)
➔ death duties, stamp duty5 to be used as something [= serve as something]:
The living room also does duty as a home office.
do duty as something
The living room also does duty as a home office. ➔ double duty, heavy-duty

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