a pupil appointed to help a teacher, e.g. by keeping order or performing a specific task
somebody or something that monitors or is used in monitoring, e.g. a device for observing a biological condition or function
a heart monitor
a receiver used to view the picture being picked up by a television camera
a screen displaying information from a computer
any of several species of large lizards of tropical Asia, Africa, and Australia, that are closely related to the iguanas: genus Varanus
in former times, a small warship with heavy firepower for its size
monitorial /-ʹtawri·əl/ adj
monitorship noun
[Latin monitor one who warns, overseer, from monitus, past part. of monēre to warn; (sense 4) from its supposedly giving warning of the presence of crocodiles; (sense 5) named after Monitor, first ship of this type]