roonosaurus 

A young female child born with little to no hair. Often mistaken for a boy.

Yes, she doesn't have much hair, she's a roonosaurus, but she will grow to be a fine young woman with a full head of hair.

roonosaurus by JoeC26 October 19, 2020

Rhinosaurus

1. a dinosaur from the prehistoric era. commonly mistaken for the rhinocerous

when asked what a rhinosaurus was, mitra answered, "isn't it a dinosaur or something?"

Rhinosaurus by i think u know who wrote this January 6, 2009

rennosaurus rex 

The rennosaurus rex is a sacred god who created earth as well as many other planets he also made and destroyed the dinosaurs.He died of his own power about a hundred years ago and is said to currently live in Yellowknife NWT

Help me! Rennosaurus rex please! please!
awesome creater godly

rennosaurus rex by deathly amazing January 19, 2017

rhinosaurus

mix between a rhino and dinosaur

im running through the hall like a rhinosaurus

rhinosaurus by David...mash January 19, 2009

rootasaurus 

An uncommonly large penis - so large that it reminds one of the dinosaurs that lived during the Mesozoic Era

This morning she backed her ass up on my rootasaurus. She said my dick was so big she felt like she had went back in time to when the dinosaurs were alive.

rootasaurus by ChickenHawk88 January 10, 2021

Rhynosaurus

Arjay thought it was rhynosaurus not rhinoceros.

Teacher: What land mammal is heavier than an elephant?

Arjay: rhynosaurus

Arthur: BRO LMAO L NO
Riley: HAHAHAHA

Rhynosaurus by MrFloofy April 12, 2023

T-rannosaurus wreck 

A noun referring to someone seriously high on meth to the point they have wrecked their life.

That Meth-head is a t-rannosaurus wreck.

T-rannosaurus wreck by Wordslayeratl March 23, 2021