a slang term for the pelvis bone. commonly used only among girls.
"holy heck, you just kneed me in the vagina bone!"
by Leah&Jenna September 17, 2006
The crease present where the thigh meets the abdomen in physical fit females. Often enhanced by the pelvic bone.
"That girl is wearing her pants so low that her vagina bones are showing."
by fluxquanta December 29, 2011