the activity of exerting your muscles in various ways to keep fit; "the doctor recommended regular exercise"; "he did some exercising"; "the physical exertion required by his work kept him fit"
a task performed or problem solved in order to develop skill or understanding; "you must work the examples at the end of each chapter in the textbook"
systematic training by multiple repetitions; "practice makes perfect"
(usually plural) a ceremony that involves processions and speeches; "academic exercises"
do physical exercise; "She works out in the gym every day"
give a workout to; "Some parents exercise their infants"; "My personal trainer works me hard"; "work one's muscles"
work that you are obliged to perform for moral or legal reasons; "the duties of the job"
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
a government tax on imports or exports; "they signed a treaty to lower duties on trade between their countries"