児
ジ, ニ, ゲイ, こ, こ, っこ, る

newborn babe, child, young of animals

JLPT2 G4 S7 F679

The relevant seal inscription form shows, as depicted in 思, a profusion of fine bones in fontanels (open spaces in an infant's skull over which the skull bones eventually fuse) + 儿 person → *infant*; (very young) *child*.

[Full Kanji Etymology List]