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1.
Alternate term for PMS. Term was coined by Mortimer A. London when I was bitching at him and he said "That's just your period rage talking."
I don't feel like arguing, why don't you just call me once you're over your period rage.
by Hatebear August 13, 2003
 
2.
When a girl takes PMS to the next level and becomes totally irrational, unreasonable, and is sent into a violent raging state.
Our friend, Hannah, would period rage on a monthly basis and break up with her boyfriend each time.
by justalittlebabythatdoesntstudy December 14, 2010