What is another word for chalk dust?
Pronunciation: [t͡ʃˈɔːk dˈʌst] (IPA) 
Chalk dust is a fine powder that is commonly used to write on blackboards, sidewalks, and walls. It can be a nuisance when it becomes airborne and causes respiratory problems. There are several synonyms for chalk dust, including white dust, powder, talc, calcium carbonate, and calcium sulfate. Some of these synonyms are mineral compounds that are similar in texture and composition to chalk dust. Others are simply descriptive terms that convey the same meaning. Whatever word you choose to describe this powdery substance, it is important to handle it with care and avoid inhaling it as much as possible.
