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catechu    
n. 儿茶

儿茶

catechu
n 1: extract of the heartwood of Acacia catechu used for dyeing
and tanning and preserving fishnets and sails; formerly
used medicinally [synonym: {black catechu}, {catechu}]
2: East Indian spiny tree having twice-pinnate leaves and yellow
flowers followed by flat pods; source of black catechu [synonym:
{catechu}, {Jerusalem thorn}, {Acacia catechu}]


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