The detachable segment of the cylinder of a rotary printing-machine which contains the types or plates to be printed_ so called from its curved surface, Any land or marine reptile of the order Testudines, characterised by a protective shell enclosing its body, printing, historical The curved plate in which the form is held in a type-revolving cylinder press, verb_ To flip over onto the back or top; to turn upside down, To turn and swim upside down, overturn accidentally