#1 monitor v. [supervise] keep tabs on; keep an eye on; keep under surveillance; "we are monitoring the air quality"; "the police monitor the suspect's moves". wn
#2 monitor n. [proctor] someone who supervises (an examination). wn
#3 monitor n. [admonisher, reminder] someone who gives a warning so that a mistake can be avoided. wn
#4 monitor v. check, track, or observe by means of a receiver. wn
#5 monitor n. [Monitor] an ironclad vessel built by Federal forces to do battle with the Merrimac. wn
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