Definition of Duty

Noun: duty d(y)oo-tee

The social force that binds you to the courses of action demanded by that force
"we must instil a sense of duty in our children"; "every right implies a responsibility; every opportunity, an obligation; every possession, a duty";
- responsibility, obligation
Work that you are obliged to perform for moral or legal reasons
"the duties of the job"
A government tax on imports or exports
"they signed a treaty to lower duties on trade between their countries";
- tariff