A non-transgendered female. A naturally-born woman or girl whose psychological gender identity is socially female also.

Clarification: A cis female is often commonly feminine, but this is not necessarily so. A cis female might have some or many personality characteristics that are considered masculine, butch, or commonly associated with men or boys. But unless she identifies ith and seeks to project a male persona, she is still a cis female.

Also: A cis female might be straight or lesbian.
Many might consider Gertrude Stein to be the classic bull-dyke, but she was still a cis female.
by ninja nella July 11, 2009