n. [ Malayan. ] (a) 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. (b) Catechu. [ Written also gambeer and gambir. ] [ 1913 Webster ]