say it: hal-uh-WEEN
hallowe'en is a noun meaning "the evening before All Saints' Day; often devoted to pranks played by young people". It is pronounced /ˌhæləˈwin/ — hal-uh-WEEN. It carries one recorded sense.
the evening before All Saints' Day; often devoted to pranks played by young people
Definitions, synonyms and semantic relations for hallowe'en come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.