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A male or male-ish person who is either the greatest friend you'll ever get or your sibling.
If someone calls you their brother they love you, unless you're actually their brother, in that case they hate you.
-"I'm so proud of my brother!"
-"Believe me, you don't want an actuall brother."
brother by That's a name August 5, 2019
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A brother is a little piece of shit that annoys you every second of your life. They were probably a failed abortion. If you are thinking about asking for one, rethink that decision because it will be the worst decision of your life if you ask for one.
brother by anonymous fact-teller September 15, 2019
A brother is someone who constantly beat you up, break your dreams, supresses you, make you look bad in front of your patents, eat your candy, snitch to your parents and wake you up with a knife one inch from your head!

Still (it appears) your parents say that it's your brother and you should love each other unconditionally. If you're home alone with your brother for a day or two, i wouldn't wonder if you newer woke up again, or woke up with a pillow presses to your face.

But on the other hand, if you where the only child in the house, you would probably suffer from diabetes...
Me: "My back hurt and i don't believe in myself"
Friend: "I'd hate to have a brother"
The most anxious, depressed and unpopular guy at school: "I have 3"
Brother by Jimmy Jackson Potter November 6, 2019
Boy or man who has the same two parents in common with someone.
brother by Mr. Jacov November 23, 2019
A mom loves her son out of all people

A brother is supposed to be really annoying that is their job
BROTHER

My brother hates me
Brother by Jaaacobb June 20, 2020
A demon sent to torcher you for looking at too many things on urban dictionary
You: my brother is being evil again

Me: what did you search up on Urban Dictionary
Brother by andPeggy1776 July 2, 2020