rooi·bos (roibôs′, -bŏs′)
A South African shrub (Aspalathus linearis) in the pea family, having green needlelike leaves that turn red when oxidized and dried and are widely used to make tea.
[Afrikaans : rooi, red (from Middle Dutch, root; see reudh- in the Appendix of Indo-European roots) + bos, shrub, forest (from Middle Dutch bosch, woods, forest; akin to English bush).]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.