11 letters · 16 points in Scrabble
noun the torpid or resting state in which some animals pass the winter
noun cessation from or slowing of activity during the winter; especially slowing of metabolism in some animals
noun the act of retiring into inactivity
originFrom Latin hībernātus, from hībernō, from hībernus (“wintry, of or pertaining to winter”).
Etymology from Wiktionary, CC BY-SA 3.0