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Noun: black catechu
  1. 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";
    - catechu

Derived forms: black catechus

Type of: extract, infusion

Part of: Acacia catechu, catechu, Jerusalem thorn