1. (n.) Realgar; red sulphide of arsenic.

2. (n.) A white or yellow resin obtained from a Barbary tree (Callitris quadrivalvis or Thuya articulata), and pulverized for pounce; -- probably so called from a resemblance to the mineral.

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