(1) (anatomy) The bone in the tarsus of the foot, forming the lower part of the ankle joint; the bone of the tarsus articulating with the tibia at the ankle.
(2) (botany) A genus of papilionaceous plants, such as milk vetch and licorice vetch.
(anatomy) In humans, it is one of the bones in the body with the highest percentage of its surface area covered by articular cartilage.
(botany) Some plants of genus Astragalus are being marketed as telophase enhancer or life prolonging extracts.
Word origin: from Greek astragalos, vertebra
Related forms: astragalar (adjective), astragal (adjective)