Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A child.
- n. A young person.
- n. Slang Pal. Used as a term of familiar address: "I said to the girl, rather snootily: 'I have a trade, kiddo. I'm a detective'” ( Ross Macdonald).
Wiktionary
Examples
“Working on breaking this cycle ASAP as my kiddo is as stubborn as they come.”
“I was wondering, just last night at 3am, if my kiddo is ever going to do the same.”
“People have DIRTY minds whenever they see me whip it out and no kiddo is around to put it into context. haha”
“Hope poor kiddo is doing better. (and the storm was so bad here I thought the noise outside was a street sweeper going by; it was just the wind racing through the trees)”
“My kiddo is 9 now and is mostly just very excited and wants a new dress, etc.”
“The kiddo is a big handshaker, but I still have to remind him to wash his hands before meals, after using the bathroom, etc., so I know he's washing as necessary.”
“I am not often called kiddo now, but my mother used to call me that!”
“At the risk of being branded "kiddo", I'm curious, were "Lion King I 1/2" and "Lilo and Stitch 2" part of the DisneyToon Studios, sequels?”
“Ethel drove in for the best hearings and took a chair near the press table, calling us all "kiddo," chewing gum constantly, lobbying us in asides: "Can you believe this guy?”
“LAMB: Did he call you -- and you quote him calling you "kiddo"?”
Lists
‘kiddo’ hasn't been added to any lists yet.

yarb I think of my poems as my kiddo, and no doubt but Tennyson felt that way too...
- Stevie Smith, Novel on Yellow Paper Feb 22, 2009