A patch of hair (similar to the individual's head hair) that is located between the vagina and the butthole. The Scarth is usually groomed and some scarths contain beads, braids, flowers, etc. In western culture, scarths are extravagantly decorated in an attempt to attract a classy mate.
When I finally got her panties off, I noticed the most incredible scarth I had ever seen! It looked like Princess Leia's head!