"threespine stickleback" meaning in English

{
  "forms": [
    {
      "form": "threespine sticklebacks",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "three-spined stickleback",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "threespine stickleback"
      },
      "expansion": "threespine stickleback (plural threespine sticklebacks)",
      "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",
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          "source": "w"
        },
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          "source": "w"
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          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Gasterosteiform fish",
          "orig": "en:Gasterosteiform fish",
          "parents": [
            "Fish",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
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            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Gasterosteus aculeatus, an endangered species of European stickleback."
      ],
      "id": "en-threespine_stickleback-en-noun-FtXSWsmp",
      "links": [
        [
          "Gasterosteus aculeatus",
          "Gasterosteus aculeatus#Translingual"
        ]
      ],
      "wikipedia": [
        "threespine stickleback"
      ]
    }
  ],
  "word": "threespine stickleback"
}

{
  "forms": [
    {
      "form": "threespine sticklebacks",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "three-spined stickleback",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "threespine stickleback"
      },
      "expansion": "threespine stickleback (plural threespine sticklebacks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
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        "English multiword terms",
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        "en:Gasterosteiform fish"
      ],
      "glosses": [
        "Gasterosteus aculeatus, an endangered species of European stickleback."
      ],
      "links": [
        [
          "Gasterosteus aculeatus",
          "Gasterosteus aculeatus#Translingual"
        ]
      ],
      "wikipedia": [
        "threespine stickleback"
      ]
    }
  ],
  "word": "threespine stickleback"
}