When to use rag in Korean
Korean: 걸레[ geol-re ]

When to use it
A rag (걸레) is a piece of cloth used for cleaning. People use it to wipe floors, tables, windows, and other dirty things in the home. It is a very common word when talking about cleaning.
Example sentences
저는 걸레로 바닥을 닦아요.
I wipe the floor with a rag.
싱크대 옆에 걸레가 있어요.
There is a rag next to the sink.
학교에서 책상을 걸레로 닦았어요.
At school, I wiped the desk with a rag.
마트에서 새 걸레를 샀어요.
I bought a new rag at the mart.
캠핑장에서 걸레로 테이블을 닦았어요.
At the campsite, I wiped the table with a rag.
기차에서 물을 쏟아서 걸레가 필요했어요.
I spilled water on the train, so I needed a rag.