hibernate

verb (used without object), hi·ber·nat·ed, hi·ber·nat·ing.

1. Zoology. to spend the winter in close quarters in a dormant condition, as bears and certain other animals.Compare estivate.
2. to withdraw or be in seclusion; retire.
3. to winter in a place with a milder climate: Each winter finds us hibernating in Florida.

verb (intr)

1. (of some mammals, reptiles, and amphibians) to pass the winter in a dormant condition with metabolism greatly slowed downCompare aestivate
2. to cease from activity