"landfast" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "land",
        "3": "fast"
      },
      "expansion": "land + fast",
      "name": "compound"
    }
  ],
  "etymology_text": "land + fast",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "landfast (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "landfast sea ice"
        },
        {
          "ref": "1862, Arthur Young, John Chalmers Morton, The Farmer's Calendar",
          "text": "There is an economy in the matter of breakages and repairs, for if the plough should be brought up upon a landfast rock, instead of the brunt coming simply on the draught rope, which would either snap or pull the framework of the plough to pieces, it is, through the pull of the one drum upon the other, immediately spread all over the field wherever the rope goes […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Connected or anchored to the land."
      ],
      "id": "en-landfast-en-adj-JpATTnBM",
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "landfast"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "land",
        "3": "fast"
      },
      "expansion": "land + fast",
      "name": "compound"
    }
  ],
  "etymology_text": "land + fast",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "landfast (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English compound terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms with quotations",
        "English uncomparable adjectives",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "text": "landfast sea ice"
        },
        {
          "ref": "1862, Arthur Young, John Chalmers Morton, The Farmer's Calendar",
          "text": "There is an economy in the matter of breakages and repairs, for if the plough should be brought up upon a landfast rock, instead of the brunt coming simply on the draught rope, which would either snap or pull the framework of the plough to pieces, it is, through the pull of the one drum upon the other, immediately spread all over the field wherever the rope goes […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Connected or anchored to the land."
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "landfast"
}