overwinter Syllabification: (o·ver·win·ter)Pronunciation: /ˈōvərˈwin(t)ər/Definition of overwinter verb [no object] 1 [with adverbial of place] spend the winter:many birds overwinter in equatorial regions 2(of an insect, plant, etc.) live through the winter:the germinated seeds will overwinteroverwinter in other Oxford dictionaries Definition of overwinter in the British & World English dictionary