astragalus

noun astragalus

• bone — Your bones are the hard parts inside your body which together form your skeleton.
• talus — the uppermost bone of the proximal row of bones of the tarsus; anklebone.
• anklebone — the bone of the ankle; talus
• tarsus — Anatomy, Zoology. the bones of the proximal segment of the foot; the bones between the tibia and the metatarsus, contributing to the construction of the ankle joint.