coverall definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a one-piece, loosefitting, outer garment with sleeves and legs, worn, often over regular clothing, as to protect against dirt
coverall definition by American Heritage Dictionary
A loose-fitting one-piece work garment worn to protect clothes. Often used in the plural.