From WordNet (r) 3.0 (2006) [wn]:
actress
n 1: a female actor
From The Collaborative International Dictionary of English v.0.48 [gcide]:
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]