definition of
Monitor

[1] #1 Monitor v. [monitor, 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, monitor] someone who supervises (an examination). wn

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

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

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