Jisho

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Noun
1. nightcap
Wikipedia definition
2. Nightcap (garment)A nightcap is a warm cloth cap worn while sleeping, often with pajamas or a nightgown. They are similar to winter 'beanies' worn in cold climates. They were common in northern Europe before central heating was available, when homes were cold at night. Women's night caps usually consisted of a long piece of cloth wrapped around the head. Men's nightcaps were traditionally pointed, with a long top, usually accompanied by a small ball of some sort, which was used similar to a scarf.
Read “Nightcap (garment)” on English Wikipedia
Read “ナイトキャップ” on Japanese Wikipedia
Read “Nightcap (garment)” on DBpedia

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