wrightine

noun

1. A rare alkaloid found in the bark of an East Indian apocynaceous tree (<i>Wrightia antidysenterica</i>), and extracted as a bitter white crystalline substance. It was formerly used as a remedy for diarrh&oelig;a. Called also <i>conessine</i>, and <i>neriine</i>.

   noun

   Source: webster1913