HI'BERNACLE, noun [Latin hibernacula, winter-quarters.] 1. In botany, the winter-quarters of a plant, that is, a bulb or a bud, in which the embryo of a future plant is inclosed by a scaly covering and protected from injuries during winter. 2. The winter-lodge of a wild animal.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI