casulo
1. A silky or woolly covering spun by the larvae of many insects, especially silkworms, as protection during the pupal stage
The silkworm spins a cocoon to protect itself during metamorphosis.
A lagarta da seda tece um casulo para se proteger durante a metamorfose.
2. A protective or insulating covering or layer
The building's thermal cocoon keeps it warm in winter.
O casulo térmico do edifício o mantém aquecido no inverno.
3. A state of isolation or seclusion, especially one that is self-imposed or comfortable
She wrapped herself in a cocoon of blankets while reading.
Ela se envolveu em um casulo de cobertores enquanto lia.
In both American and Brazilian contexts, 'cocoon' is commonly used metaphorically to describe self-isolation or creating a comfortable, protective environment. During the COVID-19 pandemic, the term gained prominence in both cultures when referring to sheltering at home. The biological meaning remains consistent across both cultures.
Related Idioms & Phrases
to cocoon oneself (encher-se em um casulo - to isolate or protect oneself)
break out of one's cocoon (sair do casulo - to emerge from isolation or comfort zone)
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