kiddo

kid +‎ -o; see kid (“child”).

• (General American) IPA^(key): /ˈkɪdoʊ/
• Rhymes: -ɪdəʊ

kiddo (plural kiddos or kiddoes)

1. (colloquial, affectionate) A close friend; especially used as a form of address.

   Okay, kiddo, I gotta run.

2. (colloquial, affectionate) A child.
   • 2008, Robin Dutton-Cookston, The Foggiest Idea: Tales of a Displaced Texan in San Francisco Mamaland (page 51)

     The books say it's normal. Toddlers often stop napping around this age, and the average amount of sleep needed by a two-year-old is between nine and thirteen hours. My kiddo cuts logs for twelve hours at a stretch, so she's plenty rested.