(hyphenated when used attributively) A very intelligent or accomplished child or young person, especially one who demonstrated his or her knowledge and quick thinking on radio or television programs in the mid-20th century.
1999 May 29, Tom Vallance, “Obituary: Vanessa Brown”, in The Independent, UK, retrieved 9 July 2014:
Brown recalled: I went up to read for her, and this forbidding lady said, "You think you're smart, you Quiz Kid you! What did Shakespeare mean by the phrase, bearded like the pard?" And I said, "Leopard, bearded like the leopard". It was a guess, a wild guess. And she said, "By golly, yes! You are smart!"
