catechuPronunciation: /ˈkatɪtʃuː/Definition of catechu noun [mass noun] a vegetable extract containing tannin, especially one (also called cutch) obtained from the heartwood of an Indian acacia tree, used for tanning and dyeing. another term for gambier.Origin: late 17th century: modern Latin, from Malay kacu. Compare with cachoucatechu in other Oxford dictionaries Definition of catechu in the US English dictionary
