graymail 

to force the government to choose between prosecuting an employee for serious crimes or preserving national security secrets

Libby's lawyers deliberated on how to graymail the government in order to achieve an acquittal.

graymail by Eli Hearst August 21, 2008

gaymail 

A sometimes used extention of Googles 'Gmail', typically by people who dislike Gmail and/or Google for various reasons.

"Send it to my gmail, bro"
"Hah, gaymail! Hotmail is the shit"

gaymail by Vaskern January 22, 2014

Graytail

Refers to a woman who's pubic hair has turned gray.

"I got me some graytail last night!"

Graytail by Trashly Z. October 12, 2008