- a gummy substance derived from various low, spiny, Asian shrubs belonging to the genus Astragalus, of the legume family, especially A. gummifer: used to impart firmness to pills and lozenges, stiffen calicoes, etc.
- any of various spiny leguminous plants of the genus Astragalus, esp A. gummifer, of Asia, having clusters of white, yellow, or purple flowers, and yielding a substance that is made into a gum
- the gum obtained from any of these plants, used in the manufacture of pills and lozenges, etc
