IPA: //ˈkɑːr.wɑːʃ//
KK: /kɑrˌwɑʃ/
A place where vehicles are cleaned, usually with water and soap, either by machines or by people.
I took my car to the carwash to get it cleaned before the road trip.
Carwash → It is formed from "car" (from Old North French *carre*, meaning a wheeled vehicle) and "wash" (from Old English *wæscan*, meaning to cleanse with water). The word "carwash" refers to a place where a car is cleansed or washed.
Think of a 'wheeled vehicle' ('car') being 'cleansed' ('wash') — that's what a carwash is all about.