"bluefin" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "blue",
        "3": "fin"
      },
      "expansion": "blue + fin",
      "name": "compound"
    }
  ],
  "etymology_text": "From blue + fin.",
  "forms": [
    {
      "form": "bluefins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bluefin (plural bluefins)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Scombroids",
          "orig": "en:Scombroids",
          "parents": [
            "Fish",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
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            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "bluefin tuna, any of a number of types of tuna characterised by their blue fins."
      ],
      "id": "en-bluefin-en-noun-l8kf9uWW",
      "links": [
        [
          "bluefin tuna",
          "bluefin tuna"
        ],
        [
          "tuna",
          "tuna"
        ],
        [
          "blue",
          "blue"
        ],
        [
          "fin",
          "fin"
        ]
      ]
    }
  ],
  "word": "bluefin"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "blue",
        "3": "fin"
      },
      "expansion": "blue + fin",
      "name": "compound"
    }
  ],
  "etymology_text": "From blue + fin.",
  "forms": [
    {
      "form": "bluefins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bluefin (plural bluefins)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Scombroids"
      ],
      "glosses": [
        "bluefin tuna, any of a number of types of tuna characterised by their blue fins."
      ],
      "links": [
        [
          "bluefin tuna",
          "bluefin tuna"
        ],
        [
          "tuna",
          "tuna"
        ],
        [
          "blue",
          "blue"
        ],
        [
          "fin",
          "fin"
        ]
      ]
    }
  ],
  "word": "bluefin"
}