noun
carapace
KAIR-uh-pays/ˈkærəpeɪs/
A hard outer shell that protects an animal's body.
The turtle withdraws its head beneath its hard carapace.

Etymology
French carapace meant “tortoise shell,” the protective covering that English names in turtles and other animal groups. The word’s deeper origin is uncertain.
In context
you have the protective carapace of the crab
More examples
- The crab's carapace protects its upper body.
- A patterned carapace covers the tortoise.
- The researcher measures each lobster's carapace.
Forms
carapace · carapaces
Similar words
- shell
- The broader term for a hard outer covering.
- exoskeleton
- The entire external supporting skeleton rather than a specific upper shell.