Definition of "cocoon"

cocoon

/kəˈkuːn/

noun
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.
verb
third-person singular simple present cocoons, present participle cocooning, simple past and past participle cocooned
1. (transitive) To envelop in a protective case.
  Quotations
  Vern grabbed the throw draped over the back of the sofa and cocooned herself within it.
  2021, Rivers Solomon, Sorrowland, #Merky Books, page 163
2. (intransitive) To withdraw into such a case.