Definition of "washer" in English

noun

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

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.

noun

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.

verb

1. (transitive) To fit (a mechanical device) with a washer.