The Collaborative International Dictionary of English v.0.48:

Inocarpin \In`o*car"pin\, n. [Gr. 'i`s, 'ino`s, muscle + karpo`s
   fruit.] (Chem.)
   A red, gummy, coloring matter, extracted from the colorless
   juice of the Otaheite chestnut (Inocarpus edulis).
   [1913 Webster]