gamboge tree gam·bo·get·ree uncommon noun 1. low spreading tree of Indonesia yielding an orange to brown gum resin (gamboge) used as a pigment when powdered Synonymsgamboge treeGarcinia hanburyiGarcinia cambogiaGarcinia gummi-gutta Related words Broader terms angiospermous tree Parts Garcinia WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.