All Souls' Day

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun November 2, the day on which special prayers are offered for the souls in purgatory.

from the GNU version of the Collaborative International Dictionary of English.

• The second day of November; a feast day of the Roman Catholic church, on which supplications are made for the souls of the faithful dead.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• proper noun In Christian tradition, the annual feast day celebrating the life of all the faithful departed on the second day of November.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a day of supplication for all the souls in purgatory