electronic equipment that provides visual images of varying electrical quantities | any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles |
a magnifier of images of distant objects | a piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble |
an area in which something acts or operates or has power or control: | electronic equipment that is used to check the quality or content of electronic transmissions |
the state of the environment in which a situation exists | display produced by a device that takes signals and displays them on a television screen or a computer monitor |
| someone who gives a warning so that a mistake can be avoided |
| someone who supervises (an examination) |