環椎 (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.
環椎 (Japanese): an atlas
Definitions
an atlas
Ancestry of “環椎”, step by step
環椎 traces back through two separate lines of ancestry.