mid-14c., "day's unpaid labor due to a lord by vassals under French feudal system" (abolished 1776), from Old French corvee (12c.), from Late Latin corrogata (opera) "requested work," from fem. past participle of Latin corrogare, from com- "with" (see com-) + rogare "to ask" (see rogation).[corvee etymology, corvee origin, 英语词源]