the hard largely calcareous covering of a mollusc or a brachiopod | a mark on a die or on a playing card (shape depending on the suit) |
hard outer covering or case of certain organisms such as arthropods and turtles | a radar echo displayed so as to show the position of a reflecting surface |
ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun | a small hard seed found in some fruits |
a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners) | a disease of poultry |
the housing or outer covering of something | a minor nonspecific ailment |
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 | |