Definition of astragalus in English:

astragalus

noun

Zoology
  • another term for talus
    • ‘Next to the pelvic bone was a much smaller bone, an astragalus (ankle bone), also of an elephant.’
    • ‘In the hind limb of these species, the bones of the ankle are also reduced in number, and the astragalus becomes the main weight-bearing bone.’
    • ‘Most of what I found were unidentifiable broken sections of long bones, but I did find a bird femur (thigh bone) and a nice rodent astragalus (ankle bone).’

Origin

Mid 16th century: via Latin from Greek astragalos ankle bone, molding also the name of a vetch.

Pronunciation

astragalus

/əˈstraɡələs/