n.
The supposed right of a feudal lord to have sexual relations with a vassal's bride on her wedding night.
[French : droit, right + du, of the + seigneur, lord of a manor.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.