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Added 9 October 2026

washer

/ˈwɒʃə(ɹ)/ noun

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about washer at Wordnik → Where our words come from →

Something that washes; especially an appliance such as a washing machine or dishwasher.
A person who washes (especially clothes) for a living; a washerman or washerwoman.
A person who washes their hands compulsively, as a symptom of obsessive-compulsive disorder.

noun

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.

verb

To fit (a mechanical device) with a washer.

Origin

From Middle English wasshere, wassher, equivalent to wash + -er. Cognate with Dutch wasser, German Wäscher.

From Wiktionary, via Kaikki.org (CC BY-SA)

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