1. A tarmacadam road or surface.
2. A paved surface of a runway, taxiway, or apron at an airport.
v. tar·macked, tar·mack·ing, tar·macs
To cause (an aircraft) to sit on a taxiway.
To sit on a taxiway. Used of an aircraft.
[Originally a trademark.]
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.