to sleep copiously; often during the winter time, or while incredibly ill. May be following the ingestion of excess amounts of food. Usually involving a bed, though it isn't required. Not to be confused with Hibenerdate.
"What did you do over winter break Mark?"

"I was exhausted from exams, so I ate thirty tacos then hibedernated."

"I was wondering why you missed a month of school."
by Doxic June 4, 2013
Get the Hibedernate mug.