the hard largely calcareous covering of a mollusc or a brachiopod | the hard largely calcareous covering of a mollusc or a brachiopod |
hard outer covering or case of certain organisms such as arthropods and turtles | hard outer covering or case of certain organisms such as arthropods and turtles |
ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun | ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun |
a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners) | a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners) |
the housing or outer covering of something | the housing or outer covering of something |
a very light narrow racing boat | a very light narrow racing boat |
a rigid covering that envelops an object | a rigid covering that envelops an object |
the exterior covering of a bird's egg | the exterior covering of a bird's egg |
the hard usually fibrous outer layer of some fruits especially nuts | the hard usually fibrous outer layer of some fruits especially nuts |
the material that forms the hard outer covering of many animals | the material that forms the hard outer covering of many animals |