Another word for period. Name came from the way Jupiter is like a big red dot, much like a girls period.
Oh no Jupiter hit again!
by Julian B. April 30, 2007
A term used to refer to the rectal and anal condition of inflammation, chaffing, moisture, and subsequent great red spot, similar to that geographically found on the planet of Jupiter.
After mowing the lawn in late August wearing a tight pair of Wrangler's, Paul developed a serious Jupiter.
by novelty February 06, 2006
A brave, strong, courageous girl. Dark hair and olive skin. Super sexy and confident.
Damn I want a Jupiter!
by Rhetorical questions March 05, 2015