Rainbros 

1. A homosexual bro.

2. The 2007 album by Brodeohead. A Broternative rockband from Brofordshire, England.

1. I'm going to hang out with my Rainbro, but I mean, as friends, ya know?

2. Favorite song of In Rainbros? Got to be Weird Fishes/Broppegi.

Rainbros by RToffler June 3, 2010

Rainbros 

A group of male friends who share the same passion for catching rainbow trout.

Went out and had an awesome day fishing with my rainbros

Rainbros by Yawbow fisherman February 12, 2017

Rainboosie 

A gay best friend you think of as a brother or sister. The bond you share is inseparable.
A LGBT boo

"I'm going to visit my rainboosie at a club."
"Going out to party with my rainboosies tonight."

Rainboosie by Ghostdoll July 2, 2020

Rainbro 

When you live in Seattle and your bro also lives in Seattle 😂

Alec, Ali, Ben, Anton, Omar, Lakshay, Jaisav are all rainbros in Seattle

Rainbro by bruv135 August 20, 2022

Rainbro 

A homosexual male, who still maintains all the qualities of true bro's. The best example is Neil Patrick Harris.

Friend 1- Wait, so you're saying Esteban played basketball today? I thought he was gay.

Friend 2- He is. He's just an ultimate rainbro.

Rainbro by Rainbro June 10, 2011

Rainbro 

A group of bro's all wearing different color polo shirts.

Brian and all his friends came over last night in different colored polo's. I could practically taste the rainbro.

Rainbro by Reisencach February 8, 2010

Rainbrow 

An eyebrow that is extremely curved, like a rainbow

God Nathan, got a right pair of rainbrows there

Rainbrow by powwface October 4, 2009