From Longman Dictionary of Contemporary Englishoverwintero‧ver‧win‧ter /ˌəʊvəˈwɪntə $ ˌoʊvərˈwɪntər/ verb [intransitive, transitive] HBLIVING/ALIVEto live through the winter, or to make it possible for something to live through the winter These birds generally overwinter in tropical regions.→ See Verb table
Examples from the Corpus
overwinter• Around twenty thousand wild birds overwinter at Slimbridge.• And ever since the birds have been coming to overwinter at the Wildfowl and Wetlands Trust in Slimbridge.• These are ideal for the amateur breeder or hobbyist who overwinter fish.• These few are the remaining overwintering guests who are just waking up.• Pests overwintering in stubble or soil are foiled by clearing stubble after harvest or letting the land lie fallow.• We may find something wrong with her, items we need for overwintering in the ice.• However, to be on the safe side, it is better to take cuttings in August to overwinter under glass.• Some of the alders held overwintering white patches of woolly aphids on their gray stems. 