ping of death
A ping that is maliciously utilized to crash the computer of the recipient, or otherwise have harmful effects. It is usually caused by sending a datagram larger than that allowed by a given IP protocol.
A connection between two elements, objects, or materials. Also, the location at which such a connection occurs. For instance, the connection point of two conductive paths.
The time required for the contacts of a relay or switch to open, once the actuating signal or condition is removed.