Something that washes; especially an appliance such as a washing machine or dishwasher.
A person who washes his or her hands compulsively, as a symptom of obsessive-compulsive disorder.
A person who washes (especially clothes) for a living; a washerman or washerwoman.
A face cloth.
A flat disk, placed beneath a nut or at some joint, to distribute pressure, alleviate friction or prevent leakage.
To fit (a mechanical device) with a washer.
A machine, usually automatic, that washes clothes, etc.