One obvious question about Halloween is, "What does the word itself mean?" The name is actually a shortened version of "All Hallows' Even," the eve of All Hallows' Day. "Hallow" is an Old English word for "holy person," and All Hallows' Day is simply another name for All Saints' Day, the day Catholics commemorate all the saints. At some point, people began referring to All Hallows' Even as "Hallowe'en" and then simply "Halloween.