The pouch or case traditionally carried by medical doctors, especially when making house calls, and containing medical instruments and supplies.
A pouch or case containing burglary tools.
A black plastic sack produced for the disposal of household waste.
A flight recorder; the brightly colored cockpit voice recorders and flight data recorders in an aircraft designed to aid in determining the cause of an accident.
A device used in phreaking that prevents the calling party from being billed for the call placed.
A type of theater characterized by a lack of decoration or complex mechanisms.
A theoretical construct or device with known input and output characteristics but unknown method of operation.
Any similar device on motor vehicles, such as rail event recorders and ship trip recorders.
To focus on the inputs and outputs without worrying about the internal complexity.