periwig 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 wig; specif., one of the type worn by men in the 17th and 18th cent., usually powdered and having the hair gathered together at the back with a ribbon
Origin: earlier perwyke, altered ; from French perruque: see peruke
periwig definition by American Heritage Dictionary
A wig, especially a peruke.
Origin: By folk etymology from Old French perruque; see peruke.