1. An imaginary unit of vegetable, approximately equal to one "greenie," a type of dog treat. However, it can be used in almost any way imaginable (think hoss)
1. Go crunch on a greenis!
2. Holy fuck, look at that huge greenis!
3. I bet you a greenis Dumbledore will die in the sixth book!
2. Holy fuck, look at that huge greenis!
3. I bet you a greenis Dumbledore will die in the sixth book!
by Pippinzzz January 15, 2006
Get the Greenismug.