Hibernation Hideaway is a term used to describe the places where animals go to hibernate during the winter months. The two crossword solutions for this term are LAIR (4 letters) and Bearcave (8 letters). A LAIR is a den or shelter that an animal uses as a home, while a Bearcave is a specific type of den used by bears for hibernation. Both of these terms refer to the same concept, but the Bearcave is more specific to the type of animal that uses it.