…a device used for observing, checking, or keeping a continuous record of something…
…a large heavily built African lizard that has greyish-olive skin with yellow markings and is semiaquatic…
…a portable device that records the rhythm of the heart continuously, typically for 24-48 hours, by means of electrodes attached to the chest…
…a large tropical Old World lizard with a long neck, narrow head, forked tongue, strong claws, and a short body. Monitors were formerly believed to give warning of crocodiles…
