小骨 (Japanese) comes from Japanese 骨, from Sanskrit कपाल, from Proto-Indo-Iranian kapā́las, from Proto-Indo-European káp-ōl-, from Proto-Indo-European kap- — to seize, hold.
小骨 (Japanese): a small bone
Definitions
a small bone
Ancestry of “小骨”, step by step
小骨 traces back through two separate lines of ancestry.