From Longman Dictionary of Contemporary Englishdustsheetdust‧sheet /ˈdʌst-ʃiːt/ noun [countable] DHFTBC especially British English a large sheet of cloth used to protect furniture from dust or paint SYN drop cloth American English
Examples from the Corpus
dustsheet• No luck there but a duvet and dustsheets would disguise the shape perfectly well from the eyes of the squeamish.• The square hall of Moorlake was bare, its furniture under dustsheets in the centre. 