Nouns

(n)cocoonsilky envelope spun by the larvae of many insects to protect pupas and by spiders to protect eggs

Verbs

(v)cocoonretreat as if into a cocoon, as from an unfriendly environment“Families cocoon around the T.V. set most evenings”, “She loves to stay at home and cocoon”
(v)cocoonwrap in or as if in a cocoon, as for protection