Top definition
When a girls thighs are so skinny that they don't touch and form a rectangle with her vagina.

Source: The Sara and Aimee Podcast (SaraAndAimee.com)
"Oh my god, she's so skinny. She totally has a rectangular vagina."
by Marceeeeel August 14, 2011
Get the mug
Get a Rectangular vagina mug for your bunkmate Trump.