ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
1. : any of several woody plants having bitter bark: as
a. Australia
(1) : a woody shrub ( Alstonia constricta ) with a bark sometimes used as a febrifuge
(2) : native quince
(3) : a shrub or small tree ( Tabernaemontana orientalis ) having evergreen leaves, sweet-scented flowers with slender tubes, and orange-colored fruit
b. : fever tree b
c. : cascara buckthorn
2. : the bark from a bitterbark especially when used medicinally