1. (noun) extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally

• black catechu

2. (noun) East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu

• acacia catechu
• jerusalem thorn

1. (noun) extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally

• extract
• infusion

2. (noun) East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu

• acacia

1. (noun) East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu

• genus acacia