noun

1. SHELL, hard outer covering or case of certain organisms such as arthropods and turtles
2. SHELL, the hard largely calcareous covering of a mollusc or a brachiopod
3. SHELL, a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)
4. SHELL, ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun
5. SHELL, the housing or outer covering of something
6. SHELL, a very light narrow racing boat
7. SHELL, a rigid covering that envelops an object
8. SHELL, the exterior covering of a bird's egg
9. SHELL, the hard usually fibrous outer layer of some fruits especially nuts
10. SHELL, the material that forms the hard outer covering of many animals
11. SHELL, the hard outer covering of an animal, insect, etc., that protects it
12. SHELL, the hard outer covering of an egg
13. SHELL, the hard outer covering of a nut, fruit, or seed

verb

1. SHELL, remove the husks from
2. SHELL, remove from its shell or outer covering
3. SHELL, come out better in a competition, race, or conflict
4. SHELL, use explosives on
5. SHELL, look for and collect shells by the seashore
6. SHELL, hit the pitches of hard and regularly
7. SHELL, fall out of the pod or husk
8. SHELL, create by using explosives
9. SHELL, to remove the shell or outer covering of (something)
10. SHELL, to shoot shells at (someone or something) using large guns
11. SHELL, to score heavily against (a pitcher) in baseball

1. the shell of a crab
2. We collected shells at the beach.
3. We're going to have stuffed shells for dinner.
4. They shelled the enemy troops.
5. The town was shelled during the battle.