The Gap - Natalia Siwiec Gap The space between the thighs on a female body, just below the crotch. A gap is indicative of a slim figure and is very sexy. Steve: "Wow! Check out the gap on that chick!" Darryl: "Hot stuff. I'm going to go get her number." Attribution to UrbanDictionary.Com http://www.urbandictionary.com/define.php?term=Gap Wow how about that folks?