A theoretical construct or device with known input and output characteristics but unknown method of operation.
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.
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.
An instantiation of a class or structure.
A person or thing toward which an emotion is directed.
An instance of one of the two kinds of entities that form a category, the other kind being the arrows (also called morphisms).
Objective; goal, end or purpose of something.
A thing that has physical existence but is not alive.
The noun phrase which is an internal complement of a verb phrase or a prepositional phrase. In a verb phrase with a transitive action verb, it is typically the receiver of the action.
To disagree with or oppose something or someone; (especially in a Court of Law) to raise an objection.