a sauce made of butter, flour, seasonings, and milk or sometimes chicken or veal stock; béchamel.
Origin of white sauce
First recorded in 1715–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a thick sauce made from flour, butter, seasonings, and milk or stock
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