Definition of bitterbark 

1 : any of several woody plants having bitter bark: such 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 sense b

c : cascara buckthorn

2 : the bark from a bitterbark especially when used medicinally

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More about bitterbark

Share bitterbark

Statistics for bitterbark

Look-up Popularity

Comments on bitterbark

What made you want to look up bitterbark? Please tell us where you read or heard it (including the quote, if possible).


an open space surrounded by woods

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

True or False

Test your knowledge - and maybe learn something along the way.

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!