A device that allows its operator to draw a freehand sketch over a motion picture image (noun)
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Use "telestrator" in a sentence
"LIN: And the picture that the audience isn't seeing on your telestrator is a guy with a happy face on the back of his shirt for some reason, but -- so maybe that bodes well for the mission."
"Madden also loved his telestrator, which is not some weapons system made famous in the Star Wars saga, but a device that allowed him to use a light pen to diagram plays over live or replayed footage."
"And with the TV rookie's second on-air start coming with Minnesota at the New York Yankees Sunday, he hasn't exactly been polishing his telestrator skills."