MONITOR

Definition of MONITOR

(noun)someone who supervises (an examination)
(noun)someone who gives a warning so that a mistake can be avoided
(noun)display produced by a device that takes signals and displays them on a television screen or a computer monitor
(noun)electronic equipment that is used to check the quality or content of electronic transmissions
(noun)a piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble
(noun)any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles
(verb)keep tabs on; keep an eye on; keep under surveillance
(verb)check, track, or observe by means of a receiver