The systematic listening to, and reporting of, foreign radio transmissions in order to gather intelligence.

A large lizard native to Southeast Asia, Varanus salvator.

A particular kind of monitor lizard, native to Australia.

plural of water monitor

Varanus exanthematicus, a species of monitor lizard.

plural of savannah monitor

Any of various large carnivorous lizards of the family Varanidae, all of whose extant species are of genus Varanus, native to Africa, Asia and Australia.

plural of monitor lizard

An intercom system that enables a person to remotely detect sounds of distress from a baby; a baby alarm. / A device used to measure the vital signs of a baby.

A device that individuals under house arrest or parole are often required to wear to track their location. It is attached to the person's ankle.