Open English Wordnet
Nouns
(n)monitor, monitoring devicedisplay produced by a device that takes signals and displays them on a television screen or a computer monitor (n)monitorelectronic equipment that is used to check the quality or content of electronic transmissions (n)monitora piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble (n)monitor, monitor lizard, varanany of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles Verbs
(v)monitor, supervisekeep tabs on; keep an eye on; keep under surveillance“we are monitoring the air quality”,
“the police monitor the suspect's moves” (v)monitorcheck, track, or observe by means of a receiver