Pronunciation: (wosh'ur, wô'shur), [key]
1. a person or thing that washes.
2. See washing machine.
3. a 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.