Half Sibling

A sibling who you do not have the same parents as. HALF siblings either have the same mother only, or the same father only.

Since Wendy and Sally are sisters, and they do not have same father, they are Half Siblings.

by Fame Hungry June 17, 2009

Sibling

A combination of a best friend and a punching bag

Tony is my sibling. He bugs the heck out of me, but I love him so much.

by Mystic_Snowfang July 2, 2008

Sibling Zone

Pretty much the Brother Zone and Sister Zone mashed into one convienient term.

Jen told me she liked me like a brother. How the fuck do you get out of the Sibling Zone?

by Mofos in the Zone November 5, 2009

Quarter sibling

In which two individuals do not share the same mother or father but rather connected through the same sibling.

Can’t wait to hang out with my quarter siblings!

by ThtCoolKid November 17, 2019

Younger Sibling

a small brat.

me: look at that small brat who is my younger sibling

by failedabortion May 3, 2021

national embarrass your sibling day

May 4 is national embarrass your sibling day

today May 4th is national embarrass your sibling day

by Sarah 🤠 March 18, 2020

National Throw Your Sibling Day

Its national throw your sibling day let your sibling throw you across the room and you do the same!

Boy: Hey its October 3 you know what that means.

Sister: No?

Brother: Its National Throw Your Sibling Day! GET OVER HERE!

by Exivity October 1, 2021