Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'louis'
Fr < OFr Loeis
; prob. via ML Ludovicus
< OHG Hludowig
< Gmc base *hluda-
, famous (< base of loud
) + *wiga-
, war, hence, lit., famous in war; in the form Lewis
, sometimes an adaptation of Welsh Llewelyn