Catechu(n.)
- A dry, brown, astringent extract, obtained by decoction and evaporation from the Acacia catechu, and several other plants growing in India. It contains a large portion of tannin or tannic acid, and is used in medicine and in the arts. It is also known by the names terra japonica, cutch, gambier, etc.
Catechuic(a.)
- Of or pertaining to catechu or its derivatives. See catechin.