cocoon

From French cocon, diminutive of coque (“shell”).

• IPA^(key): /kəˈkuːn/ [kʰɘ̞ˈkʰu̟ːn]

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• Rhymes: -uːn
• Homophone: kokoon

cocoon (plural cocoons)

1. The silky protective case spun by the larvae of some insects in which they metamorphose, the pupa.
2. Any similar protective case, whether real or metaphorical.

cocoon (third-person singular simple present cocoons, present participle cocooning, simple past and past participle cocooned)

1. (transitive) To envelop in a protective case.
   • 2021, Rivers Solomon, Sorrowland, #Merky Books, page 163:

     Vern grabbed the throw draped over the back of the sofa and cocooned herself within it.

2. (intransitive) To withdraw into such a case.