The American Heritage® Dictionary of the English Language, 4th Edition
n. A resinous astringent extract obtained from the leaves of a woody vine (Uncaria gambir) of Malaysia and Indonesia, used medicinally and in tanning and dyeing.
the GNU version of the Collaborative International Dictionary of English
n. The inspissated juice of a plant (Uncaria Gambir) growing in Malacca. It is a powerful astringent, and, under the name of Terra Japonica, is used for chewing with the Areca nut, and is exported for tanning and dyeing.
n. Catechu.
The Century Dictionary and Cyclopedia
n. An extract rich in tannin prepared from the leaves and young shoots of Uncaria Gambier, a rubiaceous shrub of the Malayan peninsula and islands, which climbs by means of hooked spines.
Word Usage
"Sungei Ujong, like the other States of the Peninsula, is almost entirely covered with forests, now being cleared to some extent by tapioca, gambier, and coffee-planters."