Top Definition
A lesbian in a loving relationship with another woman, who leaves her girlfriend for a man, generally due to internalised homophobia.

Named after a character in the book and miniseries, Tipping the Velvet, who leaves her girlfriend to marry her manager, despite really loving her girlfriend.
When Nan got home, she found her beloved in bed with their male manager. What a fucking Kitty Butler!!!
by Nan King June 28, 2009
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