'Astragalus' definitions:

Definition of 'Astragalus'

(from WordNet)
noun
Large genus of annual or perennial herbs or shrubs of north temperate regions; largest genus in the family Leguminosae [syn: Astragalus, genus Astragalus]
noun
The bone in the ankle that articulates with the leg bones to form the ankle joint [syn: anklebone, astragal, astragalus, talus]