dropcloth
/ˈdrɑpˌklɔθ/
noun
- A large sheet of cloth, plastic, or other material used to protect floors, furniture, or surfaces from paint, dust, or debris during work.
- Use a plastic dropcloth to protect the carpet from glue spills.
- He spread a dropcloth on the floor before painting the ceiling.
- The old dropcloth was covered in splatters from years of projects.