juvenile body - the body of a young person

baby tooth, deciduous tooth, milk tooth, primary tooth - one of the first temporary teeth of a young mammal (one of 20 in children)

fontanel, fontanelle, soft spot - any membranous gap between the bones of the cranium in an infant or fetus

child, kid, minor, nipper, tiddler, youngster, tike, tyke, shaver, small fry, nestling, fry - a young person of either sex; "she writes books for children"; "they're just kids"; "`tiddler' is a British term for youngsters"