Sisterection 

Becoming aroused from contact, verbal or physical, from one's female sibling.

I couldn't concentrate on my maths homework, as I had a sisterection from the family gathering.

Sisterection by Moses "Sandals" Jackson November 13, 2010

sisterectomy 

The act of removing a sister from your life, either physically or metaphorically. First used in the Simpsons episode "My Sister, My Sitter".

Simpson? Look, we've already been down there tonight for a sisterectomy, a case of severe butt rot, and a leprechaun fight. How dumb do you think we are?

sisterectomy by ubersmith May 17, 2016

sisthren 

refering to a female in a positive manner.
mainly used by rasta

jah bless mah brethren n sisthren

sisthren by KennyG January 11, 2008

Sisteen

The age of consent in South Carolina.

Rob: are you sure this is fine?
Ty: that heffer is sisteen, bo.

Rob: right, sisteen. I'm making the call
Juan: *gets punched in the face sisteen times.

Rich in Germany: I swear she's sisteen.

Chubbz: I'm sisteen.

Lois: I was sisteen a few times.

Sisteen by BeastofBanning January 30, 2018

sistren 

girls or women who are not real sisters but who are considered as such; girls or women who share sisterly relations with one another.

All the sistren of the community have been called to a meeting on the village common.

sistren by uttam maharjan December 3, 2010

sistering 

When you're friends with someone just to meet their hot sister

Why are you hanging out with him, he's such a jerk?
I know, but have you seen his sister?
I get it, sistering.

sistering by H. Archer May 24, 2016

sistherin 

sistherin is the female version of the term 'bretherin', meaning friend or brother. Thus, as the feminine version, sistherin can be defined as to mean friend or sister.

"sistherin, let us go out and burn the men"

"hello my sistherin

sistherin by Greenday_AllDay January 11, 2006