Translation guide
A protective covering used to keep dust off objects. In Japanese, the term varies depending on what is being covered—books, furniture, electronics, or mechanical parts.
The removable paper cover on a book, often with flaps.
A cloth or plastic cover placed over furniture or appliances to protect from dust when not in use.
Generic term for a protective cover. Context usually makes it clear it's for dust protection.
I put a dust cover over the sofa.
Explicitly 'dust-proof cover'. Used when you want to emphasize protection from dust.
I put a dust cover on the air conditioner.
A protective cover on machinery to keep dust and debris out.
A garment bag or cover used to protect clothes from dust in a closet.
カバー is a versatile loanword that can mean dust cover, protective cover, or even book cover. Context usually makes the meaning clear. If you need to be specific, add a modifier like ほこりよけ (dust-proof) or the item name (e.g., ソファカバー).
I had a dust cover put on at the bookstore.
This machine comes standard with a dust cover.
I bought dust covers and stored away off-season clothes.