Noun
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any of various large tropical carnivorous lizards of Africa and Asia and Australia
fabled to warn of crocodiles
- monitor lizard -
a piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble
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electronic equipment that is used to check the quality or content of electronic transmissions
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display produced by a device that takes signals and displays them on a television screen or a computer monitor
- monitoring device -
an ironclad vessel built by Federal forces to do battle with the Merrimac
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someone who gives a warning so that a mistake can be avoided
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someone who supervises (an examination)
Verb
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check, track, or observe by means of a receiver
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keep tabs on
keep an eye on
keep under surveillance
"we are monitoring the air quality"
"the police monitor the suspect's moves"