gambier

noun

1. an astringent extract obtained from the leaves and young shoots of a tropical Asian shrub, Uncaria gambir, of the madder family, used in medicine, dyeing, tanning, etc.

noun

1. an astringent resinous substance obtained from a rubiaceous tropical Asian woody climbing plant, Uncaria gambir (or U. gambier): used as an astringent and tonic and in tanning