Pronounce a short prayer before a meal, as in Before we started in on the turkey, we asked Liz to say grace. The word grace here signifies asking for God's blessing or giving thanks for the food being served. [Early 1300s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.