the hard largely calcareous covering of a mollusc or a brachiopod | a detachable container of fuel on an airplane |
hard outer covering or case of certain organisms such as arthropods and turtles | a group of aquatic mammals |
ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun | a several-seeded dehiscent fruit as e.g. of a leguminous plant |
a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners) | the vessel that contains the seeds of a plant (not the seeds themselves) |
the housing or outer covering of something | |
a very light narrow racing boat | |
a rigid covering that envelops an object | |
the exterior covering of a bird's egg | |
the hard usually fibrous outer layer of some fruits especially nuts | |
the material that forms the hard outer covering of many animals | |