1 definition by Nilpotent N'er do good

Top Definition
in Math, a prime number of the form, 2^(n) + 1, named after the famous 19th century mathematician Pierre de Fermat. However, in geek circles, it refers to the third nipple of women with a third nipple because 3 is the first Fermat Prime.
Geek 1: "I was going to sleep with Jessica from Real Analysis but it turns out she has a Fermat Prime."

Geek 2: "What dude? I was just trying to figure out the 12th Fermat Prime."
by Nilpotent N'er do good April 20, 2009
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.