dambonite

from The Century Dictionary.

• noun A white crystalline substance existing to the extent of 0.5 per cent. in caoutchouc, obtained from an unknown tree growing near the Gaboon in western Africa. It is very readily soluble in water and in aqueous, but not in absolute, alcohol.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) A white, crystalline, sugary substance obtained from an African caoutchouc.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry, archaic A white crystalline sugary substance obtained from an African caotchouc.