"night hag" meaning in English

{
  "etymology_text": "night + hag",
  "forms": [
    {
      "form": "night hags",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "night hag (plural night hags)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Folklore",
          "orig": "en:Folklore",
          "parents": [
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a demon that gives rise to sleep paralysis"
      ],
      "id": "en-night_hag-en-noun-8z2PEMyz",
      "links": [
        [
          "folklore",
          "folklore"
        ],
        [
          "demon",
          "demon"
        ],
        [
          "sleep paralysis",
          "sleep paralysis"
        ]
      ],
      "raw_glosses": [
        "(folklore) a demon that gives rise to sleep paralysis"
      ],
      "topics": [
        "arts",
        "folklore",
        "history",
        "human-sciences",
        "literature",
        "media",
        "publishing",
        "sciences"
      ],
      "wikipedia": [
        "night hag"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/naɪt hæɡ/"
    }
  ],
  "word": "night hag"
}

{
  "etymology_text": "night + hag",
  "forms": [
    {
      "form": "night hags",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "night hag (plural night hags)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Folklore"
      ],
      "glosses": [
        "a demon that gives rise to sleep paralysis"
      ],
      "links": [
        [
          "folklore",
          "folklore"
        ],
        [
          "demon",
          "demon"
        ],
        [
          "sleep paralysis",
          "sleep paralysis"
        ]
      ],
      "raw_glosses": [
        "(folklore) a demon that gives rise to sleep paralysis"
      ],
      "topics": [
        "arts",
        "folklore",
        "history",
        "human-sciences",
        "literature",
        "media",
        "publishing",
        "sciences"
      ],
      "wikipedia": [
        "night hag"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/naɪt hæɡ/"
    }
  ],
  "word": "night hag"
}