washer

plural washers

1. Something that washes; especially an appliance such as a washing machine or dishwasher.

   A £1.2 million carriage washer has opened at Norwich Crown Point, enabling Greater Anglia to clean its 58 Stadler trains. It is one of two new washers (the other is for '720s' at Southend), […]

   2021 January 13, “GA opens new carriage washers”, in RAIL, issue 922, page 15

2. A person who washes (especially clothes) for a living; a washerman or washerwoman.
3. A person who washes their hands compulsively, as a symptom of obsessive-compulsive disorder.
4. A face cloth.

plural washers

1. A flat piece of material, often of metal and often an annulus, placed beneath a nut or at some joint, to distribute pressure, alleviate friction, provide directionally differentiated friction (e.g. making the nut turn counter-clockwise only with difficulty), or prevent leakage.

   To ensure that the stays are steamtight, a nut is then screwed tight up to copper washers inside and out.

   1955 February, “The Why and the Wherefore: The Belpaire Firebox”, in Railway Magazine, page 146

present singular third person washers · participle present washering · participle past washered · past washered

1. transitiveTo fit (a mechanical device) with a washer.

plural Washers

1. A surname.