- a tree, Dyera costulata, of the Malay Peninsula, from which a resinous latex is obtained.
- the latex of these trees, used as a substitute for chicle.
- a tropical Old World tree, Alstonia scholaris, of the dogbane family, of which the bark is used in medicine.
- a Malaysian apocynaceous tree of the genus Dyera, esp D. costulata
- the latex obtained from this tree, used in the manufacture of chewing gum
- the wood of this tree
