monitor

1 monitor /ˈmɑːnətɚ/ noun
plural monitors
1 monitor
/ˈmɑːnətɚ/
noun
plural monitors
Britannica Dictionary definition of MONITOR
[count]
1 
: a device that is used for showing, watching, or listening to something: such as
a  : a device that shows information or images on a screen
— see pictures at camera, computer
b  : a device that is used to listen to sounds being made in another room
c  : a device that shows and records information about a condition or function of the body
2 
: a student who helps the teacher at a school
3 
: a person who has the job of checking or watching some activity or behavior
2 monitor /ˈmɑːnətɚ/ verb
monitors; monitored; monitoring
2 monitor
/ˈmɑːnətɚ/
verb
monitors; monitored; monitoring
Britannica Dictionary definition of MONITOR
[+ object]
: to watch, observe, listen to, or check (something) for a special purpose over a period of time