The Collaborative International Dictionary of English v.0.48:

Actress \Ac`tress\, n. [Cf. F. actrice.]
   1. A female actor or doer. [Obs.] --Cockeram.
      [1913 Webster]

   2. A female stageplayer; a woman who acts a part.
      [1913 Webster]

WordNet (r) 3.0 (2006):

actress
    n 1: a female actor