Roo 

Short for kangaroo, this term is used to describe a girl who jumps from guy to guy.

Guy 1: Rachel ha had like 5 boyfriends in the last month
Guy 2: dude I know she's such a roo

Roo by The darkest mind July 2, 2014

Roo 

term for the booty

I'm staring at roo

Roo by Food is babe September 3, 2016

roo 

A word highschoolers use that means yes

Roo bruh

roo by aightbuddy May 20, 2016

Roo 

A word used to describe any emotion you could possibly ever feel.

I feel so darn roo right now .

Roo by Rooxhickdn August 8, 2018

Roo 

1.an extremly massive and huge person; one who is the size of 40 people; a fat ass

2. One who eats 24/7 while simultaneously being an annoying prick (I.E stealing, saying offhand remarks and telling lies about girls his ugly ass has supposedly slept with)

Holy shit! That Roo is fat as hell! There is a Roo eating all my food!

Roo by Totzot January 12, 2011

Roo 

An absolutely legend who loves peen, has a peen, and appreciates the awesomeness of peen. A Roo is made of awesome and brings fun to MSN orgies in epic proportions.

...the definition speaks for itself really. If you don't have a Roo, then I'm gutted for you.

Roo by Lanna-Pidge August 21, 2008

roo 

A roommate of the opposite sex. Can be used to refer to both past or present roommates; once a roo, roos for life.

Roooo! Let's take a nap!

roo by roooo May 16, 2007