v. 1 intr. (usu. foll. by at, in) spend the winter. 2 intr. (of insects, fungi, etc.) live through the winter. 3 tr. keep (animals, plants, etc.) alive through the winter.
OVERWINTER
Meaning of OVERWINTER in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012