laun·der (lôndər, län-)
v. laun·dered, laun·der·ing, laun·ders
a. To wash (clothes, for example).
b. To wash, fold, and iron: shirts that were neatly laundered by the hotel staff.
2. To make (illegally obtained money) appear lawfully obtained or legitimate, especially by transferring it through legitimate accounts or businesses.
3. To make more acceptable or presentable, sanitize: "The transcripts are, of course, laundered ... unidentified larger chunks of conversation are reported missing throughout" (Eliot Fremont-Smith).
1. To undergo washing in a specified way: This material launders well.
2. To wash or prepare laundry.
A trough or flume used in washing ore.
[From Middle English launder, lavender, launderer, from Old French lavandier, from Vulgar Latin *lavandārius, from Latin lavandāria, things to be washed, from lavanda, neuter pl. gerundive of lavāre, to wash; see leu(ə)- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.