1.NounA place where a wild animal goes to live or hibernate in the winter; hibernacle.
2.NounA place where a farmer, beekeeper, nurseryman, etc. moves their charges in the winter.
3.NounA more permanent location where a group that normally moves around, such as an army, circus, group of explorers, etc., takes time off to shelter for the winter.
"to go into winter quarters"
4.NounA place where someone spends one or more winters.