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washer definition

washer (wôs̸h′ər)

noun

  1. a person who washes
  2. a flat disk or ring of metal, leather, rubber, etc., used variously to make a seat for the head of a bolt or for a nut or faucet valve, to lock a nut in place, to provide a bearing surface, to serve as a seal, etc.
  3. a machine for washing something, as clothes or dishes
  4. a device for washing gases

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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