'Role' definitions:

Definition of 'role'

(from WordNet)
noun
The actions and activities assigned to or required or expected of a person or group; "the function of a teacher"; "the government must do its part"; "play its role" [syn: function, office, part, role]
noun
An actor's portrayal of someone in a play; "she played the part of Desdemona" [syn: character, role, theatrical role, part, persona]
noun
What something is used for; "the function of an auger is to bore holes"; "ballet is beautiful but what use is it?" [syn: function, purpose, role, use]
noun
Normal or customary activity of a person in a particular social setting; "what is your role on the team?"

Definition of 'Role'

From: GCIDE
  • Role \Role\, Role \R[^o]le\, n. [F. See Roll.] A part, or character, performed by an actor in a drama; hence, a part of function taken or assumed by any one; as, he has now taken the role of philanthropist. [1913 Webster]
  • Title role, the part, or character, which gives the title to a play, as the part of Hamlet in the play of that name. [1913 Webster]

Definition of 'Role'

From: GCIDE
  • Role \Role\, Role \R[^o]le\, n. [F. See Roll.] A part, or character, performed by an actor in a drama; hence, a part of function taken or assumed by any one; as, he has now taken the role of philanthropist. [1913 Webster]
  • Title role, the part, or character, which gives the title to a play, as the part of Hamlet in the play of that name. [1913 Webster]

Synonyms of 'role'

From: Moby Thesaurus