hi·ber·nac·u·lum

[hahy-ber-nak-yuh-luhm]
noun, plural hi·ber·nac·u·la [-luh] .
1.
a protective case or covering, especially for winter, as of an animal or a plant bud.
2.
winter quarters, as of a hibernating animal.
Also, hi·ber·nac·le [hahy-ber-nak-uhl] .

Origin:
1690–1700; < Latin hībernāculum winter residence, equivalent to hībernā(re) (see hibernate) + -culum -cule2

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
hibernaculum or hibernacle (ˌhaɪbəˈnækjʊləm, ˈhaɪbəˌnækəl) [Click for IPA pronunciation guide]
 
—n , pl -ula, -les
1.  the winter quarters of a hibernating animal
2.  the protective case or covering of a plant bud or animal
 
[C17: from Latin: winter residence; see hibernate]
 
hibernacle or hibernacle (ˌhaɪbəˈnækjʊləm, ˈhaɪbəˌnækəl, -jʊlə) [Click for IPA pronunciation guide]
 
—n
 
[C17: from Latin: winter residence; see hibernate]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Hibernaculum is always a great word to know.
So is gobo. Does it mean:
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a scrap or morsel of food left at a meal.
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American Heritage
Science Dictionary
hibernaculum   (hī'-bər-nāk'yə-ləm)  Pronunciation Key 

  1. A protective case, covering, or structure, such as a plant bud, in which an organism remains dormant for the winter.

  2. The shelter of a hibernating animal.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Individuals may move within the hibernaculum to find suitable temperatures.
Mating occurs directly before hibernation, but copulating pairs may be found in
  the hibernaculum throughout winter.
The hibernaculum must also provide protection from light, noise, and predators.
The cave is also an important hibernaculum for several species of bats.
Related Words
tabernacle
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