1. Plural of hibernaculum; a shelter or structure in which an animal spends the winter in a dormant state.
Usage: Chiefly used in biology and zoology; The singular form is hibernaculum
2. In botany, a bud or other plant structure that survives winter and allows the plant to regrow in spring.
Usage: Technical botanical term

Examples

• Bears create hibernaculums in caves where they can safely sleep through the winter.
• The hibernaculums of many bat species are located deep within caves.
• Scientists studied the hibernaculums used by ground squirrels to understand their survival strategies.
• Some insects develop specialized hibernaculums beneath tree bark.
• The hibernaculums of aquatic turtles are often found in the mud at the bottom of ponds.