any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles | relatively long-bodied reptile with usually two pairs of legs and a tapering tail |
a piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble | a man who idles about in the lounges of hotels and bars in search of women who would support him |
electronic equipment that is used to check the quality or content of electronic transmissions | |
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) | |