definition of
monitor

[1] #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] #2 monitor n. [proctor] someone who supervises (an examination). wn

[3] #3 monitor n. [admonisher, reminder] someone who gives a warning so that a mistake can be avoided. wn

[4] #4 monitor v. check, track, or observe by means of a receiver. wn

[5] #5 monitor n. [Monitor] an ironclad vessel built by Federal forces to do battle with the Merrimac. wn