Other forms: cocoons; cocooned; cocooning
A cocoon is a silky web spun around the larvae of many insects. Caterpillars emerge from their cocoons as beautiful butterflies.
The word cocoon can also refer to a form of self-protection for humans. For some people, their house is a cocoon, a cozy retreat from which they can escape the world. They cocoon themselves away for a whole weekend, reading, watching TV, and not answering email or the phone. Another word for cocoon is chrysalis, but only in the context of insects.