n. pl. pa·chu·cos
1. A Mexican American man or boy who dresses in flamboyant clothes, often one who belongs to a neighborhood gang.
2. Offensive A Mexican American man or boy.
[American Spanish, person from El Paso, pachuco, possibly alteration of payuco, yokel, from Spanish payo, peasant, perhaps from Galician Payo, Pelagius (considered a typical peasant name).]
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.