IPA: /ˈwɒʃər/
KK: /ˈwɔʃər/
A flat disk used to reduce friction, prevent leaks, or distribute pressure, or a machine used for washing clothes or dishes.
I need to buy a new washer for my washing machine.
Washer → The word 'washer' originates from Old English 'wæscere', meaning one who washes. It is derived from 'wæscan' (meaning to wash) and the agent noun suffix '-er' (meaning a person who). A washer is therefore a person or device that washes something.
Think of someone who 'washes' ('wæscan') things — that's why a washer is a person or device that cleans.