Definition of secede - withdraw formally from membership of a federal union, an alliance, or a political or religious organization Definition of secede - withdraw formally from membership of a federal union, an alliance, or a political or religious organization
A shell casing is a piece of ammunition that is made of metal. It is often brass, but it can be made of other metals as well, and the more durable the better. Shell casings can be made from any kind of ammunition that is fired from a pistol, rifle or shotgun. It is not a bullet, but it is a piece of the larger ammunition mechanism that is loaded into the chamber to be shot.
1 Casing is the multiple layers of steel and cement inside the drilled hole used to protect water aquifers. 2  The specific length, thickness, strength and composition of casing is regulated at the state level. 3  Illustration Courtesy of the Texas Oil & Gas Association.