Wiktionary
alt. A brilliant or accomplished young person. n. A brilliant or accomplished young person.
Usage examples of "whiz kid".
We just got the governor of Michigan to be president of the International Whiz Kid Fan Clubs and he's on the other wire.
By the time he gets there it will be tomorrow evening and the phony Whiz Kid will be on his way to jail.
And here he is, the weirdo you've been panting for, the notorious outlaw, WISTER, THE WHIZ KID!
Only the whiz kid from the Mayors office was smiling as he stepped once again through the grilled door into the bullpen.
It suggested that Soneji might be a niac himself, another whiz kid, but not willing to let a nine-year-old beat him at video games for the sake of the cause.
But I didn't have anything to do with turning him into a whiz kid.