I think you may use ***[kid][1]***; the term is from the late 16th century: 


> - c. 1200, "the young of a goat," from a Scandinavian source such as Old Norse kið "young goat,"
> - ***Extended meaning "child" is first recorded as slang 1590s,*** established in informal usage by 1840s. Applied to skillful young thieves and pugilists since at least 1812. 

Etymonline

  [1]: http://www.etymonline.com/index.php?term=kid