definition of
responsibility

[1] #1 responsibility n. [duty, 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. wn

[2] #2 responsibility n. [province] the proper sphere or extent of your activities; "it was his province to take care of himself". wn

[3] #3 responsibility n. [responsibleness] a form of trustworthiness; the trait of being answerable to someone for something or being responsible for one's conduct; "he holds a position of great responsibility". wn