radiator sister

A woman who is a little rough around the edges but like a radiator in that she radiates or emits light, heat, & sound.

I like her style, she's definitely a radiator sister .

by MoreDirtyHarryThanGirl April 21, 2018

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Sister

someone you don't want to have a sexual relationship. EVEN IF YOU ARE IN ALABAMA

Guy 1: "Yo dude I got lucky with Elizabeth!"
Guy2: "Nice! Elizabeth Davidson?"
Guy 1: "Nah Wilson"
Guy 2: "Lucky! Wait, isn't she your sister?"

by DeputyCeoOfSex October 22, 2023

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Sister

Usually a wild or untamed animal, capable of anything. You must steer clear of their path otherwise you will meet your demise. Pack quite a punch at times of anger.

Your sister destroyed the universe, oh no.

by Definiety.com November 15, 2025

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Sister-san

A pejorative term for an Asian girl who mimicks language, dress and mannerisms of black ghetto kids.

There's a lot of sister-sans at the club tonight.

by 2704 June 1, 2003

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sister dear

The term used for when someone is completely jealous of their sister or when someone hates their sister.

"Does she send nudes"

"No, sister dear is too perfect for that"

by Ima Dragonfly August 6, 2017

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The meaning of WaterChestnut Sisters is another term for third sisters. It is when you become a certain age; most normally 10 or before a teenager and you’re guardian tells you that you have a WaterChestnut Sister.

“Oh my god guys, I just found out I have a WaterChestnut Sisters!”

by google.com// October 26, 2020

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