youngster (
http://definr.com/youngster)
n : a young person of either sex (between birth and puberty);
"she writes books for children"; "they're just kids";
"`tiddler' is a British term for youngsters" [syn:
child,
kid,
minor,
shaver,
nipper,
small fry,
tiddler,
tike,
tyke,
fry,
nestling]