tragacanth
/ˈtrægəkænθ/(亦作gum tragacanth)
noun
mass noun
1- a white or reddish plant gum, used in the food, textile, and pharmaceutical industries黄芪胶; 黄蓍胶。
1.1
- This gum is obtained from plants of the genus Astragalus, family Leguminosae, in particular the Eurasian A. gummifer.此树胶得自豆科紫云英属（黄芪属）植物, 尤其是欧亚的胶黄蓍。
词源
late 16th cent.: from French tragacante, via Latin from Greek tragakantha 'goat's horn'， from tragos 'goat' (because it is browsed by goats) + akantha 'thorn' （referring to the shrub's spines）.