gouache (gwäsh, g-äsh)
a. A method of painting with opaque watercolors mixed with a preparation of gum.
b. An opaque pigment used when painting in this way.
2. A painting executed in this manner.
[French, from Italian guazzo, from Latin aquātiō, watering, from aquātus, past participle of aquārī, to fetch water, from aqua, water; see akw-ā- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.