‖Hi′ber‐nac″u‐lum (?), n. [See Hibernacle.] 1. (Bot.) 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.
2. (Zoöl.) A little case in which certain insects pass the winter.
3. Winter home or abiding place. J. Burroughs.