2 definitions by Leon Firestone

Top Definition
The invisible circular zone around an angry person where no one is safe from getting kicked in the teeth.
Rick is hitting the bottle pretty hard since he found out Lauren was cheating on him. You know he has anger problems, but his Killcumference today is at least 4 yards. Stay out of the killcumference.
by Leon Firestone July 10, 2008
(N.) A group of women who are on same menstrual cycle.
"After working here for three months, it was only a matter of time before I was added to Mary and Ashley's tandem bike."
by Leon Firestone December 29, 2012

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