1. Chiefly British a large tent with open sides, esp. one used for some outdoor entertainment
2. Us a rooflike structure or awning projecting over an entrance, as to a theater
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'marquee'false sing. < Fr marquise (misunderstood as pl.), an awning, canopy over an officer's tent, lit., marquise:
reason for name uncert.