1. East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu
   "Catechu extract is used in traditional dyeing and tanning"; "Acacia catechu extract is used in traditional dyeing and tanning";
   - Jerusalem thorn, Acacia catechu
    
2. Extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally
   "Black catechu was once an important export from India";
   - black catechu

Derived forms: catechus

Type of: acacia, extract, infusion

Part of: genus Acacia

Encyclopedia: Catechu