monitor
US /ˈmɑ:nɪtə(r)/
・UK /ˈmɒnɪtə(r)/
A2
verb
- To observe and keep a record of something
noun
- A senior student at school
- Electronic screen on which you can see images
Examples
The security staff can see all the outside of the building on their CCTV monitors.
UN monitors declared the referendum fair.