Halloween

n. Allhallows Eve (eve of All Saints' Day), holiday celebrated on the evening of October 31 observed by children dressed in costumes who go from door-to-door collecting candy

v. dress up in costumes on Halloween and go from door-to-door collecting candy

Halloween, or Hallowe'en, is a holiday celebrated on the night of October 31. Traditional activities include trick-or-treating, Halloween festivals, bonfires, costume parties, visiting "haunted houses", viewing horror films, and going on haunted hayrides. Halloween originated from the Pagan festival Samhain, celebrated among the Celts of Ireland and Great Britain. Irish and Scottish immigrants carried versions of the tradition to North America in the nineteenth century. Other western countries embraced the holiday in the late twentieth century. Halloween is now celebrated in several parts of the western world, most commonly in Ireland, the United States, Canada, Puerto Rico, and the United Kingdom.
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Noun
1. the evening before All Saints' Day; often devoted to pranks played by young people
(synonym) Hallowe'en, Allhallows Eve
(hypernym) day

n. Halloween, Allhallows Eve (eve of All Saints' Day), holiday celebrated on the evening of October 31 observed by children dressed in costumes who go from door-to-door collecting candy

(n.)
The evening preceding Allhallows or All Saints' Day.