tournicunt 

A vagina so tight that it is known to cut the circulation from any man's penis.

That tournicunt was so tight my penis turned purple.

tournicunt by Derhall December 12, 2010

tourniquet 

A piece of rubber like a string tied around the arm in the bicep region to stop blood flow. Used to expose a vein when shooting heroin.

Tie the tourniquet around my arm so I can see where I'm shooting.

tourniquet by Samantha July 1, 2003

tourniquet 

The dictionary defines a tourniquet as a surgical device for arresting / stopping haemorrhage by compression of a blood vessel.

Meaning could be adapted a couple of ways:
(Surgical) Cloth or band tightened around a part of the body (like the arm) to stop blood flow temporarily.
(Religious) What Christ offers to anyone who comes to Him - Psalm 147:3 says that, "He heals the broken-hearted and binds up their wounds".

You choose your own meaning.

tourniquet by Scriv January 10, 2004

sex tourniquet

A wedding ring. Implying that sex will end or at least be decreased in regularity following marriage.

Damn, I think I left my sex tourniquet on the nightstand before I went out. God, I my wife doesn't come home early.

sex tourniquet by Call Me Ishmael September 6, 2007

tourniquet 

a song by evanescence

"my god, my tourniquet. return to me salvation!!!!"

tourniquet by FcukingBishh April 21, 2008

Tourniquet Twister 

When your girlfriend wraps multiple rubber bands around your penis very tightly and then she proceeds to suck as if she is trying to remove the venom from a snakebite.

"My girlfriend is into strange stuff. last night she gave me a tourniquet twister."
"Wow dude that's great."

Tourniquet Twister by zyxNONYMOUS June 13, 2009

Tourniquet 

A sexual position in which a man inserts his testicles into a woman's anus and allows her to constrict around them.

That chick was such a whore, she begged me for a tourniquet after I gave it to her in the butt.

Tourniquet by Petroliero February 22, 2011