Pronunciation: ( jel'u-tông", -tong"),[key] —n. 1. a tree, Dyera costulata, of the Malay Peninsula, from which a resinous latex is obtained.
2. Also called pontianak. the latex of these trees, used as a substitute for chicle.
3. Also called devil tree. a tropical Old World tree, Alstonia scholaris, of the dogbane family, of which the bark is used in medicine.