1. Noun.  a person who performs in a theatrical play or film.
  2. Noun.  one who acts; a doer.
  3. Noun.  one who takes part in a situation.
  4. Noun.  (legal) An advocate or proctor in civil courts or causes.
  5. Noun.  (legal) One who institutes a suit; plaintiff or complainant.
  6. Noun.  (qualifier, policy debate) One who enacts a certain policy action.
  7. Noun.  (software engineering) The entity that performs a role (in use case analysis).

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This entry was last updated on RefTopia from its source on 3/20/2012.