"water horse" meaning in English

{
  "forms": [
    {
      "form": "water horses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "water horse (plural water horses)",
      "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": "Scottish English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mythological creatures",
          "orig": "en:Mythological creatures",
          "parents": [
            "Fantasy",
            "Mythology",
            "Fiction",
            "Speculative fiction",
            "Culture",
            "Artistic works",
            "Genres",
            "Society",
            "Art",
            "Entertainment",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The kelpie"
      ],
      "id": "en-water_horse-en-noun-wG1WXlZZ",
      "links": [
        [
          "mythology",
          "mythology"
        ],
        [
          "kelpie",
          "kelpie"
        ]
      ],
      "raw_glosses": [
        "(Scotland, mythology) The kelpie"
      ],
      "tags": [
        "Scotland"
      ],
      "topics": [
        "human-sciences",
        "mysticism",
        "mythology",
        "philosophy",
        "sciences"
      ]
    }
  ],
  "word": "water horse"
}

{
  "forms": [
    {
      "form": "water horses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "water horse (plural water horses)",
      "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",
        "Scottish English",
        "en:Mythological creatures"
      ],
      "glosses": [
        "The kelpie"
      ],
      "links": [
        [
          "mythology",
          "mythology"
        ],
        [
          "kelpie",
          "kelpie"
        ]
      ],
      "raw_glosses": [
        "(Scotland, mythology) The kelpie"
      ],
      "tags": [
        "Scotland"
      ],
      "topics": [
        "human-sciences",
        "mysticism",
        "mythology",
        "philosophy",
        "sciences"
      ]
    }
  ],
  "word": "water horse"
}