cocoon

1 cocoon /kəˈkuːn/ noun
plural cocoons
1 cocoon
/kəˈkuːn/
noun
plural cocoons
Britannica Dictionary definition of COCOON
[count]
1 
: a covering usually made of silk which some insects (such as caterpillars) make around themselves to protect them while they grow
2 
: something that covers or protects a person or thing
2 cocoon /kəˈkuːn/ verb
cocoons; cocooned; cocooning
2 cocoon
/kəˈkuːn/
verb
cocoons; cocooned; cocooning
Britannica Dictionary definition of COCOON
1 
[+ object] : to cover or protect (someone or something) completely — usually used as (be) cocooned
2 
[no object] chiefly US : to spend time at home instead of going out for other activities

— cocooning

/kəˈkuːnɪŋ/ noun [noncount]