from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A group of 13.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Thirteen, a group of thirteen.
- n. cousin
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the cardinal number that is the sum of twelve and one
From the former custom among bakers of adding an extra roll as a safeguard against the possibility of 12 weighing light.(American Heritage® Dictionary of the English Language, Fourth Edition)
From the former practice of bakers of adding a thirteenth loaf to a batch of twelve in order to avoid punishment for accidentally selling underweight bread. (Wiktionary)