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1.
The gap between a women's thighs directly below the vagina, often diamond shaped when the thighs are together.
"I saw this girl at the beach today... She had a three finger wide thigh gap, it was amazing."
by Cirruscloud October 29, 2009
 
2.
The space between your legs, which for some reason has become an obsession. It is a stupid thing that was invented by society to hurt girls' self-image. It can cause pain, depression, and even an eating disorder. Fyi, it isn't even about being "fat" or "thin" it is entirely based on the way your hip bones were created.
"I wish I had a thigh-gap, because I don't understand that there is beauty even without having a space in between my legs" -insecure girl.
by realistic_chic123 May 17, 2014