Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One who washes: a washer of clothes; a washer of windows.
  • n. An appliance used for washing, especially:
  • n. A washing machine.
  • n. An automatic dishwasher.
  • n. A flat disk, as of metal, plastic, rubber, or leather, placed beneath a nut or at an axle bearing or a joint to relieve friction, prevent leakage, or distribute pressure.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Something that washes; especially an appliance such as a washing machine or dishwasher.
  • n. A person who washes for a living; (if female:) a washerwoman.
  • n. A flat disk, placed beneath a nut or at some joint, to distribute pressure, alleviate friction or prevent leakage.
  • n. A face cloth.

from the GNU version of the Collaborative International Dictionary of English

  • n. One who, or that which, washes.
  • n. A ring of metal, leather, or other material, or a perforated plate, used for various purposes, as around a bolt or screw to form a seat for the head or nut, or around a wagon axle to prevent endwise motion of the hub of the wheel and relieve friction, or in a joint to form a packing, etc.
  • n. A fitting, usually having a plug, applied to a cistern, tub, sink, or the like, and forming the outlet opening.
  • n. The common raccoon.
  • n. Same as Washerwoman, 2.

from The Century Dictionary and Cyclopedia

  • To fit with washers.
  • n. One who or that which washes: as, a washer of clothes; a dish-washer; a wool-washer.
  • n. An annular piece of leather, rubber, metal, or other material placed at a joint in a water-pipe or faucet to make the joint tight and prevent leakage, or over a bolt, or a similar piece upon which a nut may be screwed.
  • n. A similar article forming an ornament, as at the socket or pin that holds any adjustable utensil: as, the mother-of-pearl washers of a fan. Compare rosette.
  • n. In paper manufacturing, a straining-and-washing machine used in the process of cleaning rags, to bring them to a pulpy condition; a beating-engine.
  • n. In plumbing, the outlet of a cistern. It includes the pipe, the joint or union, and the plug, as for a basin.
  • n. A washing-machine: as, a clothes-washer, window-washer, gold-washer.
  • n. In coal-mining (short for coal-washer), any machine for washing coal.
  • n. The wagtail, a bird. Also dish-washer, peggy dish-washer, moll-washer, molly or polly wash dish, washtail, nanny washtail, etc. See cut under wagtail.
  • n. The wash-bear.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. seal consisting of a flat disk placed to prevent leakage
  • n. a home appliance for washing clothes and linens automatically
  • n. someone who washes things for a living

Etymologies

wash +‎ -er (Wiktionary)

Examples

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