mobcap 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 woman's indoor cap, esp. of the 18th cent., having a high, puffy crown and often tied under the chin
Origin: ; from Middle Dutch mop, woman's cap plush cap
mobcap definition by American Heritage Dictionary
A large high frilly cap with a full crown, worn indoors by women in the 18th and early 19th centuries.
Origin: Probably mob, mobcap (possibly from Dutch mopmuts, cap : obsolete Dutch mop-, to cover up + muts, cap) + cap1.