E.N.

Nickname for the fraternity Sigma Pi. Other common nicknames: Sigma Fried, 32 Gang

E.N. for Life!

Sigma Pi?

Yeah

by Papayao08 October 22, 2020

e.n.

Stands for "erect nipples". This is when it is cold outside and a female's nipples become hard and often show through their piece of clothing.

Oh shit! That is a serious case of e.n.

by Wilburg March 23, 2004