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WordReference Random House Learner's Dictionary of American English © 2024wash•er /ˈwɑʃɚ, ˈwɔʃɚ/USA pronunciation n. [countable]- one that washes.
- washing machine.
- Buildinga flat ring used under a bolt to give tightness to a joint, prevent leakage, etc.
WordReference Random House Unabridged Dictionary of American English © 2024wash•er (wosh′ər, wô′shər),USA pronunciation n. - a person or thing that washes.
- See washing machine.
- Buildinga flat ring or perforated piece of leather, rubber, metal, etc., used to give tightness to a joint, to prevent leakage, to distribute pressure, etc., as under the head of a nut or bolt.
- 1275–1325; Middle English; see wash, -er1
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