"coastlined" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "coastline",
        "3": "ed"
      },
      "expansion": "coastline + -ed",
      "name": "suffix"
    }
  ],
  "etymology_text": "coastline + -ed",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "coastlined (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"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ed",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2010, Adam Roberts, Stone",
          "text": "The camp we were at was called Pedit-al-le-soers, in the continent of Dubller - a crinkle-coastlined promontory that stretched a thousand kilometres out from the main northern continent of Ast-la-Cox.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Having a (specified kind of) coastline."
      ],
      "id": "en-coastlined-en-adj-q7kZ7rsg",
      "links": [
        [
          "coastline",
          "coastline"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "coastlined"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "coastline",
        "3": "ed"
      },
      "expansion": "coastline + -ed",
      "name": "suffix"
    }
  ],
  "etymology_text": "coastline + -ed",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "coastlined (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms suffixed with -ed",
        "English terms with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "2010, Adam Roberts, Stone",
          "text": "The camp we were at was called Pedit-al-le-soers, in the continent of Dubller - a crinkle-coastlined promontory that stretched a thousand kilometres out from the main northern continent of Ast-la-Cox.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Having a (specified kind of) coastline."
      ],
      "links": [
        [
          "coastline",
          "coastline"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "coastlined"
}