Definition of 'catechu'

Noun

1. extract of the heartwood of Acacia catechu used for dying and tanning and preserving fishnets and sails; formerly used medicinally
      Synonyms: black catechu
2. East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu
      Synonyms: Jerusalem thorn Acacia catechu

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