from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A child.
  • noun A young person.
  • noun Pal. Used as a term of familiar address.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun colloquial, slang An affectionate moniker for a close friend or pal, especially used as a form of address.


from Wiktionary, Creative Commons Attribution/Share-Alike License

Probably derived from kid, an informal term for child. Appears to be colloquial in United States and Canada.


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  • I think of my poems as my kiddo, and no doubt but Tennyson felt that way too...

    - Stevie Smith, Novel on Yellow Paper

    February 22, 2009