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

Rainbro 

The gay guy in the group of straight guys.

Dude 1: Is Patrick your black friend?
Dude 2: No, he's just our rainbro.

Rainbro by Danz Ferdinand January 17, 2008

rainbro 

A Rainbow brother: Someone (male) who's been met at a Rainbow gathering and feels very close.

So where did you guys meet? => He's my rainbro!

rainbro by OneWorldDestiny December 23, 2018

Rainbro 

When two guys cum in each other's hands, then high-five, letting the cum rain on them.

Me and my boyfriend, Joey, decided to get extreme with our relationship. We jacked off together, catching each other's cum, then high-fived while listening to Metallica. We then created the Rainbro.

Rainbro by Jewlz&Woody March 11, 2020

Rainbro 

A straight male who supports his gay friends' lifestyle.

He's not gay, he's just supportive of his friends; a true rainbro.

Rainbro by test tickle August 20, 2016