Top Definition
someone who has thighs like thunder, roaring upon the earth, a being of great power that resides in their thighs...the day the irissasaurus reveals itself to the world is the day mankind will perish
"OH NO ITS THE IRISSASAURUS, RUUUNN"
by turtleboy1999999 February 14, 2014
4 Words related to irissasaurus
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×