n. pl. cav·al·ries
1. Troops trained to fight on horseback.
2. A highly mobile army unit using vehicular transport, such as light armor and helicopters.
[Early Modern English, from Middle French cavalerie, from Old French, from Old Italian cavalleria, from cavaliere, cavalier; see CAVALIER.]
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.