"anchor ice" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Submerged ice anchored to the bottom of a river etc., irrespective of how it formed."
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      "id": "en-anchor_ice-en-noun-DS6AodyV",
      "links": [
        [
          "Submerged",
          "submerged"
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          "ice",
          "ice"
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        [
          "river",
          "river"
        ]
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      "synonyms": [
        {
          "word": "ground ice"
        }
      ],
      "tags": [
        "uncountable"
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      "translations": [
        {
          "code": "et",
          "lang": "Estonian",
          "sense": "submerged ice anchored to the bottom",
          "word": "põhjajää"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "submerged ice anchored to the bottom",
          "word": "pohjajää"
        },
        {
          "alt": "いかりこおり",
          "code": "ja",
          "lang": "Japanese",
          "roman": "ikarikōri",
          "sense": "submerged ice anchored to the bottom",
          "word": "錨氷"
        }
      ],
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        "anchor ice"
      ]
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  "word": "anchor ice"
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  "lang_code": "en",
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        "Submerged ice anchored to the bottom of a river etc., irrespective of how it formed."
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          "Submerged",
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          "ice",
          "ice"
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          "river",
          "river"
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          "word": "ground ice"
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  "translations": [
    {
      "code": "et",
      "lang": "Estonian",
      "sense": "submerged ice anchored to the bottom",
      "word": "põhjajää"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "submerged ice anchored to the bottom",
      "word": "pohjajää"
    },
    {
      "alt": "いかりこおり",
      "code": "ja",
      "lang": "Japanese",
      "roman": "ikarikōri",
      "sense": "submerged ice anchored to the bottom",
      "word": "錨氷"
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  ],
  "word": "anchor ice"
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