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1.
A prostitute; in particular one who will vocally and physically simulate orgasmic pleasure for her clients.
Jade, the coutesan, is renowned for being a high class mattress actress for those who can afford her services.
by fiery69 May 10, 2006
 
2.
A girl who fakes sexual pleasure for financial gain. (Alternative to "gold digger")
Loom at that - he's 60 and loaded and she's 20! What a mattress actress!
by Ashley McGrath August 10, 2007
 
3.
a girl who acts like she would be willing to sleep with you , for something gained but really has no intention of it.
as soon as i gave in and gave her 20 bucks she split, what a mattress actress
by doinksplat November 20, 2013