1. A corncob: corn on the cob.
2. A male swan.
3. A thickset, stocky, short-legged horse.
4. A small lump or mass, as of coal.
5. A mixture of clay and straw used as a building material.
[Probably from obsolete cob, round object, head, testicle.]
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.