The term 'Animal Shell' can be defined by the 8-letter crossword solution 'CARAPACE'. A CARAPACE is a hard, protective outer shell that covers the back of some animals, such as turtles, crabs, and lobsters. It is made up of a series of plates that are joined together to form a single structure. The CARAPACE provides protection from predators and environmental hazards, and also helps the animal to move more efficiently through water or on land.