1. a machine for washing clothes
2. a flat ring of metal, rubber, or plastic used to seal joints or prevent leakage
3. a person who washes something

Examples

• The washer broke down and flooded the laundry room.
• She loaded the dirty clothes into the washer.
• The plumber replaced the rubber washer in the faucet.
• A worn washer can cause the pipe joint to leak.
• The mechanic tightened the bolt with a new washer underneath.
• He worked as a dish washer at the restaurant.
• The car washer cleaned every vehicle thoroughly.