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idiot board

American  

noun

Television Slang.
  1. a mechanical apparatus, as a projector or a continuous roll of paper, for prompting a performer during a program.


idiot board British  

noun

  1. a slang name for Autocue

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of idiot board

First recorded in 1950–55