1. The evening before All Saints' Day; often devoted to pranks played by young people
   - Halloween, Hallowe'en

Type of: day

• orinasal phone
• Orinase
• Orinoco
• Orinoco River
• oriole
• Oriolidae
• Oriolus
• Oriolus oriolus
• Orion
• orison
• Orissa
• Orites
• Orites excelsa
• Oriya
• Orizaba
• Orkney
• Orkney Islands
• Orlando
• Orlando di Lasso
• orle
• Orleanais
• Orleanism
• Orleanist
• Orleans
• Orlon