1. Any of various shrubs or small trees of the genus Corylus that bear edible nuts enclosed in a leafy husk, especially the American species C. americana or the widely cultivated Eurasian species C. avellana. Also called filbert, hazelnut.
2. A light brown or yellowish brown.
[Middle English hasel, from Old English hæsel.]
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.