res·tau·rant (r?s?-t?-ränt?, -t?r-?nt) n. A business establishment where meals are served to the public. [French, restorative soup, restaurant, from present participle of restaurer, to restore, from Old French restorer; see restore.] American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.restaurant (?r?st??r??; ?r?str??; -r?nt) na commercial establishment where meals are prepared and served to customers[C19: from French, from restaurer to restore]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014res?tau?rant (?r?s t?r ?nt, -t??r?nt, -tr?nt) n. an establishment where meals are served to customers. [1830?40, Amer.;