wrightine

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

• noun (Chem.) A rare alkaloid found in the bark of an East Indian apocynaceous tree (Wrightia antidysenterica), and extracted as a bitter white crystalline substance. It was formerly used as a remedy for diarrhœa. Called also conessine, and neriine.

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

• noun organic chemistry A rare alkaloid found in the bark of an East Indian apocynaceous tree (Wrightia antidysenterica).