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. Zool.
A little case in which certain insects pass the winter.
3.
Winter home or abiding place.
J. Burroughs.
© Webster 1913.