Top definition
Something that is both heinous, and an atrocity. May be used to describe a person, place, event, thing, state of mind, or anything else you can think of.
"Did you go to Jim's party on the weekend?"
"Ya it was a Heinocity"

"Did you hear about the serial killer that was just caught?"
"Ya, he was a heinocity"
by Motha' Flippin Hiphopapoatamus December 02, 2009
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