What does the word kid mean?

Usage examples for kid

  1. " Isn't the kid in there with you? – Out Like a Light by Gordon Randall Garrett
  2. And he's using Nucky like a kid oughtn't to be used. – The Enchanted Canyon by Honoré Willsie Morrow
  3. Who was that fellow they told about in the history books he had read as a kid? – Divinity by William Morrison