Synonyms for Astragalus (same or very similar meaning)
WordNet sense 1 (large genus of annual or perennial herbs or shrubs of north temperate regions; largest genus in the family Leguminosae):
genus AstragalusWordNet sense 2 (the bone in the ankle that articulates with the leg bones to form the ankle joint):
anklebone, talus, astragalFrom the ODE community, based on WordNetadd/edit