washer
noun /ˈwɒʃə(r)/
/ˈwɑːʃər/
- a small flat ring made of rubber, metal or plastic placed between two surfaces, for example under a nut to make a connection tight
(螺母等的)垫圈 Topics Engineeringc2 - (informal) a washing machine
see also dishwasher洗衣机