Top Definition
Simply a nickname describing a woman going through her period mood swing(pms) and how this change in attitude can get ugly, thus the dinosaur suffix.
I don't think this is the right time to ask PMSaurus for money.
by brian pepper July 28, 2005

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.

×