(n.) Any one of a number of similar complex resins obtained from the bark of several trees and shrubs of the Styrax family. The most common of these is liquid storax, a brown or gray semifluid substance of an agreeable aromatic odor and balsamic taste, sometimes used in perfumery, and in medicine as an expectorant.

Canada balsam Sonora lac acacia agar amber ambergris ammoniac amyrin anime balsam bassorin benjamin benzoin camphor carob gum carrageenin chewing gum chicle colophony copaiba copal copaline dammar elemi euphorbium frankincense ghatti guacin guaiac guaiacum guar gum gum gum ammoniac gum anime gum arabic gum archipin gum benjamin gum butea gum copal gum dammar gum elemi gum juniper gum kauri gum kino gum labdanum gum myrrh gum opoponax gum resin gum rosin gum sagapenum gum sandarac gum shellac gum storax gum-lac gutta-percha kino labdanum lac lacquer mastic myrrh oleoresin olibanum pitch quince-seed gum resinate resinize resins rosin sagapenum sandarac shellac sterculia gum storax tragacanth