back·log (băklŏg′, -lôg′)
1. A reserve supply or source.
2. An accumulation, especially of unfinished work or unfilled orders.
3. A large log at the back of a fire in a fireplace.
v. back·logged, back·log·ging, back·logs
To acquire (something) as a backlog.
To become a backlog; accumulate.
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.