Commentary: office, part, purpose, use - the actions and activities assigned to or required or expected of a person or group
The role of a teacher changes daily.
The government must play it's role.
What is your role on the team?
The role of an auger is to bore holes.
WordNet 2.0 Sense Numbers: 1 3 4
Commentary: theatrical role, part, persona - an actor's portrayal of someone in a play
She plays the role of Desdemona.
WordNet 2.0 Sense Numbers: 2