Source : Webster's Revised Unabridged Dictionary (1913)

All Souls' Day \All" Souls' Day`\
   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.

Source : WordNet®

All Souls' Day
     n : a day of supplication for all the souls in purgatory [syn: {November
         2}]