hibernaculum

noun2

1. •
   The place where a hibernating animal shelters for the winter.

   • In winter, NLEBs use caves and mines as hibernacula.⁹⁴ Suitable habitat for the NLEB is present within the Proposed Route. — 2024
2. •
   A bud, case, or protective covering that a plant uses to survive the challenging environmental conditions during a dormancy period.