cocoons is a form of:

Cocoon



noun
1.
(the silky sheath around a chrysalis, any protective cover like this) សម្បុកនាងនិងសត្វល្អិតខ្លះ
ENGLISH MEANING
noun
1.
The egg cases of mucus, etc., made by leeches and other worms.
2.
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.
3.
The case constructed by any insect to contain its larva or pupa.
4.
The case of silk made by spiders to protect their eggs.