Exoskeleton (noun)

1. An external supporting structure, such as an outer covering, that serves as a protective or supporting framework for an organism.
2. A hard outer covering, such as a shell, that protects the soft tissues of an organism.

Origin:

From greek exo- ("outside, outer") + skeleton.

Examples:

1. The exoskeleton of the crab provides protection and support to its body.
2. The insects have an exoskeleton made of chitin which protects and supports their bodies.
3. The exoskeleton of the robot was designed to be strong and durable for its intended use.
4. The exoskeleton of the building is made of reinforced steel to provide stability and protection.
5. The exoskeleton of the spacecraft was designed to withstand the harsh conditions of space.