washer

《柯林斯词典》对washer的解释：

名词：

1. a washer is a thin flat ring or a small disc of metal, plastic, or rubber that is placed under a nut or bolt to make it fit tightly or to prevent leakage.
2. a washer is a flat ring of rubber, metal, or plastic that is placed under the tap in a sink to make it fit tightly and to stop water from leaking.
3. a washer is a person or a machine that washes something.
4. a washer is a small flat ring of rubber or metal that is placed under the head of a screw to make it fit tightly and to prevent leakage.

形容词：

1. if something is washer/dryer, it is a machine that washes and dries clothes.

《牛津词典》对washer的解释：

名词：

1. a washer is a ring or thin flat disc of metal, rubber, or plastic that is used to spread the load when a screw or bolt is tightened.
2. a washer is a small flat ring of rubber or metal that is used to seal the junction between a tap and a surface to prevent leaks.
3. a washer is a person or device that washes something, especially laundry.
4. washers are small thin rings of metal that are used to hold a nut or bolt in place.

词汇扩充：

1. pressure washer: 高压清洗机
2. dishwasher: 洗碗机
3. washing machine: 洗衣机
4. spring washer: 弹簧垫圈
5. lock washer: 锁紧垫圈

近义词：

1. gasket: 垫片
2. seal: 密封圈
3. ring: 环形物

反义词：

1. nut: 螺母
2. bolt: 螺栓

用法：

1. 名词用法：a washer

2. 形容词用法：washer/dryer

例句：

1. Could you please pass me the washer for this bolt?
2. I need to replace the washer under the sink because it's leaking.
3. She works as a dishwasher in a restaurant.
4. Please make sure to use a washer under each screw to prevent leaks.
5. We bought a new washer/dryer for our laundry room.
6. I need to get my clothes washed, so I'll use the washing machine.
7. Make sure to use a spring washer to provide tension in the assembly.
8. The lock washer prevents the nut from loosening.
9. I need to buy a new gasket for the engine.
10. Make sure the seal is tight to prevent water leakage.
11. He used a ring to secure the pipe connections.