[建] 儿茶

[ noun ]
tannin extract derived from any of several mangrove barks of Pacific areas
<noun.plant>

Cutch \Cutch\ (k[u^]ch; 224), n.
See {Catechu}.


Cutch \Cutch\, n. (Zo["o]l.)
See {Cultch}.

Cultch \Cultch\ (k?lch; 224), n. [Etymol. uncertain.]
Empty oyster shells and other substances laid down on oyster
grounds to furnish points for the attachment of the spawn of
the oyster. [Also written {cutch}.]

2. Young or seed oysters together with the shells and other
objects to which they are usually attached.
[Webster 1913 Suppl.]

3. Rubbish; d['e]bris; refuse.
[Webster 1913 Suppl.]


Catechu \Cat"e*chu\, n. [See {Cashoo}.] (Chem.)
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. --Ure. --Dunglison.