/kat"i chooh', -kyooh'/ , n.
any of several astringent substances obtained from various tropical plants, esp. from the wood of two East Indian acacias, Acacia catechu and A. suma: used in medicine, dyeing, tanning, etc. Also called cashoo, cutch .
[ 1670-80; kat catechu and kaccu, with same sense, alleged to be cashoo, cutch perh. kacu ]