a period of time spent in military service
work that you are obliged to perform for moral or legal reasons
the social force that binds you to the courses of action demanded by that force; every opportunity, an obligation; every possession, a duty"- John D.Rockefeller Jr
a journey or route all the way around a particular place or area
make a tour of a certain place
a government tax on imports or exports
a time for working (after which you will be relieved by someone else)
a period of time spent in military service
