duty

work that you are obliged to perform for moral or legal reasons

• “the duties of the job”

the social force that binds you to your obligations and the courses of action demanded by that force

• “we must instill a sense of duty in our children”
• “every right implies a responsibility; every opportunity, an obligation; every possession, a duty” Jo

a government tax on imports or exports

• “they signed a treaty to lower duties on trade between their countries”