bed and breakfastn. Abbr. B & B A private residence, several rooms of which are set aside for overnight guests whose paid accommodations include breakfast.bed?-and-break?fast adj.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.bed?-and-break?fast n. an inn providing guests with a room for the night and breakfast the next morning for one inclusive price. Abbr.: B and B, B&B [1905?10] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.