overwinterverb
/ˌəʊ.vəˈwɪn.tər//ˌoʊ.vɚˈwɪn.t̬ɚ/[ I ] to spend the winter in a particular place:
Beetles overwinter in leaf litter, tree crevices, and homes.
[ T ] to keep plants or animals in a particular place during the winter:
Lift and overwinter the bulbs in a frost-free greenhouse.
Their cattle are overwintered indoors.
[ T ] to continue to grow crops or plants during the winter:
If you overwinter lettuce, don't expect the seedlings to grow quickly.
overwintering
noun [ U ] uk/ˌəʊ.vəˈwɪn.tər.ɪŋ//ˌoʊ.vɚˈwɪn.t̬ɚ.ɪŋ/
The plant has to store the energy it needs for overwintering.