"East River" meaning in English

{
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        "2": "east",
        "3": "river"
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      "expansion": "east + river",
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        "1": "New York City"
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      "expansion": "(New York City):",
      "name": "sense"
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  "etymology_text": "east + river\n* (New York City): From being a river-like channel lying east of Manhattan (“New York City”)",
  "forms": [
    {
      "form": "the East River",
      "tags": [
        "canonical"
      ]
    }
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      "args": {
        "def": "1",
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      "expansion": "the East River",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
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      ],
      "glosses": [
        "A channel in New York City, New York Harbor, at the narrow end of Long Island Sound, separating Manhattan, from Long Island"
      ],
      "id": "en-East_River-en-name-2kyypPRl",
      "links": [
        [
          "channel",
          "channel"
        ],
        [
          "New York City",
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        ],
        [
          "New York Harbor",
          "New York Harbor#English"
        ],
        [
          "Long Island Sound",
          "Long Island Sound#English"
        ],
        [
          "Manhattan",
          "Manhattan#English"
        ],
        [
          "Long Island",
          "Long Island#English"
        ]
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "East River"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "Ist-Ríver",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "Ист-Ри́вер"
        }
      ],
      "wikipedia": [
        "Roosevelt Island",
        "en:East River (disambiguation)",
        "headquarters of the United Nations"
      ]
    }
  ],
  "word": "East River"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "east",
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      },
      "expansion": "east + river",
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    {
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  ],
  "etymology_text": "east + river\n* (New York City): From being a river-like channel lying east of Manhattan (“New York City”)",
  "forms": [
    {
      "form": "the East River",
      "tags": [
        "canonical"
      ]
    }
  ],
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  "lang_code": "en",
  "pos": "name",
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      "glosses": [
        "A channel in New York City, New York Harbor, at the narrow end of Long Island Sound, separating Manhattan, from Long Island"
      ],
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          "channel",
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          "Long Island Sound",
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      "wikipedia": [
        "Roosevelt Island",
        "en:East River (disambiguation)",
        "headquarters of the United Nations"
      ]
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  "translations": [
    {
      "code": "fr",
      "lang": "French",
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      "tags": [
        "feminine"
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      "word": "East River"
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  "word": "East River"
}