cisterhood 

Group that includes all biological women born with vaginas. Transwomen are excluded.

Tonya is bitter because as a transwoman, she can never be part of the cisterhood.

cisterhood by Larry the Lover August 10, 2017

sisterhood 

A bond between two or more girls, not always related by blood. They always tell the truth, honor each other, and love each other like sisters.

I am so excited to be a part of this sisterhood.

sisterhood by Brittany K. Gardner October 16, 2003

Sisterhood Rights 

the certain laws sisters' hold pertaining their sister; rights of a sister; things a sister can do

Sisterhood Rights include:
The right to know anything pertaining to dating, kissing, or sex
The right to know anything remotely secretive or relating to emotions.
The right to eat any food cooked by sister.
The right to take or give money or stuff without any attached guilt.

Sisterhood Rights by InYourFaceShaby October 16, 2010

Ovarian Cysterhood 

A group of girlfriends that share a pair of magical panties that brings luck getting laid to the person wearing them

Heidi: "I dont think we should accept any other girls in to the Ovarian Cysterhood, it will screw up the rotation schedule we have for sharing these special panties"

Heather:"I agree, the more girls in our Cysterhood the more period stains we see in them"

Ovarian Cysterhood by Frankie Puscher November 27, 2012

the sisterhood of the traveling pants

Antonym of a six pack, a pizza, and an evening watching Reservoir Dogs.

Wife: Honey, the girls and I will be discussing The Sisterhood of the Traveling Pants in the living room.
Husband: Ok, I will be downstairs.

the sisterhood of the traveling pants by Nick TQ September 20, 2005

sisterhood 

when two friends become sisters because they become sooo close that they're like family

" Laura Mallory and Mary Kueser are sisters"

sisterhood by a stranger that's jelous of them March 31, 2003

Circle of the Universally Nurturing Transcendental Sisterhood 

AKA CUNTS, the secret women's -- er, womyn's -- organization for which all feminist organizations are either pawns or fronts. Their only serious adversary is the patriarchal Faithful Union of Christian Knighthood (FUCK), with whom they have struggled since time immemorial.

"Your sister is a cunt, dude."

"Shut up! That's CUNTS, the Circle of the Universally Nurturing Transcendental Sisterhood. And if she finds out you know she's a member, she'll kill you!"

"Huh?"

Circle of the Universally Nurturing Transcendental Sisterhood by Gahmuret July 5, 2006