Definitions

1. noun

a device for displaying video or computer graphics, typically on a screen

“She turned on the monitor to check her email.”

2. noun

a person responsible for controlling or supervising something

“The quality monitor ensured that the new product met all the required standards.”

3. verb

to keep under close observation or supervision

“The teacher monitored the students during the exam.”

4. verb

to check or test something in order to assess its quality

“We monitored the new software to ensure it was stable and reliable.”