from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A staple or necessary food, especially bread.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Bread, or some other staple foodstuff.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. food made from dough of flour or meal and usually raised with yeast or baking powder and then baked
By extension from Biblical phrase break the staff of bread. (Wiktionary)
Most of the time only one-fourth pound of bread for two days was allowed; and the soggy black peasant's bread is the staff of life in Russia – it is not a "trimming" like our American bread.