- An oblong case in which the silkworm lies in its chrysalis
state. It is formed of threads of silk spun by the worm just before
leaving the larval state. From these the silk of commerce is prepared. - The case constructed by any insect to contain its larva or
pupa. - The case of silk made by spiders to protect their eggs. - The egg cases of mucus, etc., made by leeches and other
worms.
Meaning of 'cocoon' (Princeton's WordNet)
1 . cocoon
[ v]
Meaning (1): - retreat as if into a cocoon, as from an unfriendly environment
Example in sentence:
Families cocoon around the T.V. set most evenings;