compare the feminine σφῦρα, a hammer); the ankle (as globular) Derivation: neuter of a presumed derivative probably of the same as σφαῖρα (a ball, "sphere";
σφυρόν
sphuron
sfoo-ron'
Neuter of a presumed derivative probably of the same as σφαῖρα sphaira (a ball, “sphere”; compare the feminine σφῦρα sphura , a hammer); the ankle (as globular)