An instrument or device used for observing, checking, or keeping a continuous record of a process or quantity
A person operating such an instrument or device
A person who observes a process or activity to check that it is carried out fairly or correctly, esp. in an official capacity
A person who listens to and reports on foreign radio broadcasts and signals
A jointed nozzle from which water streams in any desired direction, used in firefighting and hydraulic mining
A raised section of roof running down the center of a railroad car, building, etc., providing light or ventilation; a clerestory
A television receiver used in a studio to select or verify the picture being broadcast from a particular camera
A television that displays an image generated by a computer
A loudspeaker, esp. one used by performers on stage to hear themselves or in the studio to hear what has been recorded
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
A shallow-draft armored warship mounting one or two heavy guns for bombardment
A student with disciplinary or other special duties during school hours