Definition of "denning" [denning]

• Present participle of den. (verb)

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• "Many other animals have similar behavior, e.g. denning is a natural instinct in dogs."
• "On federal land it is illegal to kill pups in their den (a practice charmingly referred to as "denning") but the mother wolf had made the grave mistake of giving birth to her babies on state owned land, so Palin's posse had the legal right to kill those pups on the spot. photo credit: First People"
• "National Zoo spokeswoman Pamela Baker-Masson told the newspaper Mei Xiang is "denning," meaning she is transporting bamboo to a dark and quiet place, is eating less and is cradling her food and other objects."