IPA: //ˈdʌstˌkʌvər//
KK: /ˈdʌstˌkʌvər/
A cover made of cloth or plastic that is used to protect furniture or equipment from dust.
She placed a dustcover over the antique chair to keep it clean.
Dustcover → It is formed from "dust" (from Old English *dust*, meaning fine particles of matter) and "cover" (from Old French *couvrir*, meaning to cover). The word "dustcover" refers to an item that covers or protects against dust.
Think of a 'cover' that protects against 'dust' — that's what a dustcover does.