||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.