"plains bison" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "Bovines",
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      "glosses": [
        "Bison bison bison, one of the two subspecies of the American bison, the other being the wood bison."
      ],
      "hypernyms": [
        {
          "english": "Bison bison",
          "word": "American bison"
        },
        {
          "english": "Bison",
          "word": "bison"
        },
        {
          "word": "bovine"
        },
        {
          "word": "bovid"
        }
      ],
      "hyponyms": [
        {
          "word": "Pennsylvanian bison"
        },
        {
          "word": "eastern bison"
        },
        {
          "word": "western bison"
        },
        {
          "word": "great plains bison"
        }
      ],
      "id": "en-plains_bison-en-noun-IcYh8FjF",
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          "Bison bison bison",
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        [
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        [
          "American bison",
          "American bison"
        ],
        [
          "wood bison",
          "wood bison"
        ]
      ],
      "synonyms": [
        {
          "word": "plains buffalo"
        },
        {
          "word": "Plains bison"
        }
      ],
      "wikipedia": [
        "en:plains bison"
      ]
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  "word": "plains bison"
}

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      "expansion": "plains bison",
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  "hypernyms": [
    {
      "english": "Bison bison",
      "word": "American bison"
    },
    {
      "english": "Bison",
      "word": "bison"
    },
    {
      "word": "bovine"
    },
    {
      "word": "bovid"
    }
  ],
  "hyponyms": [
    {
      "word": "Pennsylvanian bison"
    },
    {
      "word": "eastern bison"
    },
    {
      "word": "western bison"
    },
    {
      "word": "great plains bison"
    }
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Bison bison bison, one of the two subspecies of the American bison, the other being the wood bison."
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          "American bison",
          "American bison"
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          "wood bison",
          "wood bison"
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      ],
      "wikipedia": [
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  ],
  "synonyms": [
    {
      "word": "plains buffalo"
    },
    {
      "word": "Plains bison"
    }
  ],
  "word": "plains bison"
}