1. A tree (Acacia koa) in the pea family, native to Hawaii, having flowers arranged in axillary racemes and small sickle-shaped leaves.
2. The light-to-dark brown or reddish wood of this tree, used for furniture, crafts, cabinetry, and musical instruments.
[Hawaiian, from Proto-Polynesian *to'a, ironwood tree.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.