Definition of "dust cover" []

• A removable or hinged plastic cover used to protect a piece of equipment, such as a turntable or printer. (noun)
• See dust jacket. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Campion packed the three men, Giles and Marlowe with Mr Knapp, into the back seat of Mr Barber’s car, and fastened the canvas dust cover down securely."