catechu

Definitions of catechu
  1. noun
    East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu
    synonyms: Acacia catechu, Jerusalem thorn
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    type of:
    acacia
    any of various spiny trees or shrubs of the genus Acacia
  2. noun
    extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally
    synonyms: black catechu
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    type of:
    extract, infusion
    a solution obtained by steeping or soaking a substance (usually in water)
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