Top Definition
Noun - 1. the bloody discharge of the uterine lining during the menstrual cycle. 2. the surprise left if one's panties when the monthly visitor arrives unexpectedly, so called because it resembles the topping on Costco's Berry Sundae.
Person #1: (eating something)

Person #2: It looks like you're eating berry sundae.

Person #1: hahaha... GRRRooooossssss!!!
by 'Munky December 07, 2009

Free Daily Email

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

Emails are sent from We'll never spam you.