Slang reference to a woman's genitalia, due to its resemblance to the vegetable Cabbage.
Adopted in the 1920/1930's by the African American community, it refers to the woman's external genitalia, the vulva, that supposedly resembles a cut cabbage.
Slang term, popularized in some earlier jazz tunes, in which a woman claims to have fresh cabbage for sale, and she isn't talking about the vegetable.
It can also refer simply to Women.
Noteworthy: Can be used to refer to Women in general, as well as Paper Money.