[wosh-er, waw-sher]
a person or thing that washes.
a flat ring or perforated piece of leather, rubber, metal, etc., used to give tightness to a joint, to prevent leakage, to distribute pressure, etc., as under the head of a nut or bolt.

1275–1325; Middle English; see wash, -er1

washerless, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To washerless
World English Dictionary
washer (ˈwɒʃə)
1.  a person or thing that washes
2.  a flat ring or drilled disc of metal used under the head of a bolt or nut to spread the load when tightened
3.  any flat ring of rubber, felt, metal, etc, used to provide a seal under a nut or in a tap or valve seat
4.  See washing machine
5.  chemical engineering a device for cleaning or washing gases or vapours; scrubber
6.  (Austral) a face cloth; flannel

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

"flat ring for sealing joints or holding nuts," 1346, generally considered an agent noun of wash (q.v.), but the sense connection is difficult, and the noun may derive instead from the ancestor of Fr. vis "screw, vise."
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

wash (wŏsh)
v. washed, wash·ing, wash·es

  1. To cleanse, using water or other liquid, usually with soap, detergent, or bleach, by immersing, dipping, rubbing, or scrubbing.

  2. To make moist or wet.

  1. The act or process of cleansing or washing.

  2. A solution used to cleanse or bathe a part.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Related Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature