[mouth-wawsh, -wosh]


a solution, often containing antiseptic, astringent, and breath-sweetening agents, used for cleansing the mouth and teeth, and for gargling.

Origin of mouthwash

First recorded in 1830–40; mouth + wash
Also called collutory, collutorium. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mouthwash

Contemporary Examples of mouthwash

Historical Examples of mouthwash

  • Philippa demanded, as she mixed salt and water for a mouthwash.


    James Branch Cabell

  • He looked as though someone had put aluminum hydrogen sulfate in his mouthwash.

    A Spaceship Named McGuire

    Gordon Randall Garrett

British Dictionary definitions for mouthwash



a medicated aqueous solution, used for gargling and for cleansing the mouth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mouthwash

also mouth-wash, 1840, from mouth (n.) + wash (n.).

Online Etymology Dictionary, © 2010 Douglas Harper

mouthwash in Medicine




A medicated liquid for cleaning the mouth and treating diseased mucous membranes.collutory
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.