1. (

• duty ,
• responsibility ,
• obligation

) the social force that binds you to 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"- John D.Rockefeller Jr ;

2. (

• duty ,

) work that you are obliged to perform for moral or legal reasons; "the duties of the job" ;

3. (

• duty ,
• tariff

) a government tax on imports or exports; "they signed a treaty to lower duties on trade between their countries" ;