protective envelope, most often made from a folded leaf held in place by silk threads, in which caterpillars overwinter in a state of diapause.

A structure made by some caterpillars in which they overwinter. Often it consists of a leaf rolled and tied with silk.

A den; a site where animals aggregate to hibernate overwinter.

A winter bud, in which the rudimentary foliage or flower, as of most trees and shrubs in the temperate zone, is protected by closely overlapping scales.

A little case in which certain insects pass the winter.

Winter home or abiding place.

a frost free refuge in which animals (i.e. snakes) hibernate

shelter of a hibernating animal.