a cover or case of silk threads that some insects, especially moths, make to protect themselves before they become adults

a layer of something soft that wraps all around a person or thing and forms a protection

(figurative)<i>the cocoon of a caring family</i>

to protect somebody/something by surrounding them or it completely with something

to spend more of your free time at home and less time going out and doing things with other people

<i>After spending too much over the holidays, many will simply cocoon at home.</i>

LEARNit Dictionary