morindin

from The Century Dictionary.

• noun A yellow compound, C₂₆H₁₈O₁₄.H₂O, contained in the root-bark of Morinda citrifolia and M. tinctoria from India. It crystallizes in small needles and closely resembles ruberythric acid. Called by the natives suranji.

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

• noun (Chem.) A yellow dyestuff (C27H30O14) extracted from the root bark of an East Indian plant (Morinda citrifolia) or from the bark of Coprosma australis. The substance is also found in the fruit of the Morinda citrifolia, called noni, which is touted by some merchants to have a stimulatory effect on the immune system. It is a disaccharide derivative of anthracenedione.

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

• noun organic chemistry A yellow dyestuff extracted from the rootbark of an East Indian plant, Morinda citrifolia.