Halloween or Hallowe’en (a contraction of “All Hallows’ evening”), less commonly known as Allhalloween, All Hallows’ Eve, or All Saints’ Eve, is a celebration observed in many countries on 31 October, the eve of the Western Christian feast of All Hallows’ Day.
Halloween activities include trick-or-treating (or the related guising and selling), attending Halloween costume parties, carving pumpkins into jack-o’-lanterns, lighting bonfires, apple bobbing, and divination games, playing pranks, visiting haunted attractions, telling scary stories, and watching horror or Halloween-themed films.