exoskeleton

An exoskeleton is an outer layer that protects and supports something from outside. Many living creatures have an exoskeleton.

When we talk about animals with hard shells or bodies like insects and crustaceans, such as crabs or lobsters, we often use the term "exoskeleton." This shell serves to protect them from harm and helps them move around by providing a stiff yet flexible framework. Some robots are also designed to have an exoskeleton for added protection and support. Humans have developed some wearable devices that provide support and stability to people with certain health conditions, like paralysis or multiple sclerosis.