What is the meaning of Monitor?

noun

• Someone who supervises (an examination.
  • synonyms: proctor
• Someone who gives a warning so that a mistake can be avoided.
  • synonyms: admonisher, reminder
• An ironclad vessel built by Federal forces to do battle with the Merrimac.
• Display produced by a device that takes signals and displays them on a television screen or a computer monitor.
  • synonyms: monitoring device
• Electronic equipment that is used to check the quality or content of electronic transmissions.
• A piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble.
• Any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles.
  • synonyms: monitor lizard, varan

verb

• Keep tabs on; keep an eye on; keep under surveillance.
  • usage: "we are monitoring the air quality"; "the police monitor the suspect's moves"
  • synonyms: supervise
• Check, track, or observe by means of a receiver. .