Origin of name

The word Halloween is first attested in the 16th century and represents a Scottish variant of the fuller All-Hallows-Eve, that is, the night before All Hallows Day. Although the phrase All Hallows is found in Old English (ealra hálȝena mæssedæȝ, the feast of all saints), All-Hallows-Even is itself not attested until 1556

Symbols
Development of artifacts and symbols associated with Halloween formed over time encompassing customs of medieval holy days as well as contemporary cultures. The souling practice of commemorating the souls in purgatory with candle lanterns carved from turnips, became adapted into the making of jack-o'-lanterns.In traditional Celtic Halloween festivals, large turnips were hollowed out, carved with faces and placed in windows to ward off evil spirits. The carving of pumpkins is associated with Halloween in North America where pumpkins are both readily available and much larger – making them easier to carve than turnips. Many families that celebrate Halloween carve a pumpkin into a frightening or comical face and place it on their doorstep after dark. The American tradition of carving pumpkins preceded the Great Famine period of Irish immigration and was originally associated with harvest time in general, not becoming specifically associated with Halloween until the mid-to-late 1800s.

Trick-or-treating and guising
Trick-or-treating is a customary celebration for children on Halloween. Children go in costume from house to house, asking for treats such as candy or sometimes money, with the question, "Trick or treat?" The word "trick" refers to a (mostly idle) "threat" to perform mischief on the homeowners or their property if no treat is given. In some parts of Scotland children still go guising. In this custom the child performs some sort of trick, i.e. sings a song or tells a ghost story, to earn their treats.

Costumes
Halloween costumes are traditionally those of monsters such as ghosts, skeletons, witches, and devils. They are said to be used to scare off demons. Costumes are also based on themes other than traditional horror, such as those of characters from television shows, movies, and other pop culture icons.

Costume sales
Big research conducted a survey for the National Retail Federation in the United States and found that 53.3% of consumers planned to buy a costume for Halloween 2005, spending $38.11 on average (up $10 from the year before). They were also expected to spend $4.96 billion in 2006, up significantly from just $3.3 billion the previous year.

Games and other activities
There are several games traditionally associated with Halloween parties. One common game is dunking or apple bobbing, in which apples float in a tub or a large basin of water and the participants must use their teeth to remove an apple from the basin. A variant of dunking involves kneeling on a chair, holding a fork between the teeth and trying to drop the fork into an apple. Another common game involves hanging up treacle or syrup-coated scones by strings; these must be eaten without using hands while they remain attached to the string, an activity that inevitably leads to a very sticky face.
Some games traditionally played at Halloween are forms of divination. A traditional Scottish form of divining one's future spouse is to carve an apple in one long strip, then toss the peel over one's shoulder. The peel is believed to land in the shape of the first letter of the future spouse's name.Unmarried women were told that if they sat in a darkened room and gazed into a mirror on Halloween night, the face of their future husband would appear in the mirror. However, if they were destined to die before marriage, a skull would appear. The custom was widespread enough to be commemorated on greeting cards[26] from the late 19th and early 20th centuries.
The telling of ghost stories and viewing of horror films are common fixtures of Halloween parties. Episodes of television series and Halloween-themed specials (with the specials usually aimed at children) are commonly aired on or before the holiday, while new horror films are often released theatrically before the holiday to take advantage of the atmosphere

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