in lieu of, in place of; instead of: He gave us an IOU in lieu of cash.
Origin of lieu
1250–1300; < Middle French < Latin locus place; replacing Middle English liue < Old French liu < Latin; see locus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
stead; place (esp in the phrases in lieu, in lieu of)
Word Origin for lieu
C13: from Old French, ultimately from Latin locus place
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
late 13c., from Old French lieu "place, position, situation, rank," from Latin locum (nominative locus) "place."
Online Etymology Dictionary, © 2010 Douglas Harper
see under instead of.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.