Shell

A shell is a hard home that protects something living inside it, such as crabs, peanuts, and oysters. Shell may refer to:

• Animal shell which includes sea shells
• Shell (projectile) which is fired out of a weapon
• Eggshell which is the outer part of an egg.
• Shell (computing) which is a type of user interface in computer programs and operating systems.
• Royal Dutch Shell, an oil company.