"keyline" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "key",
        "3": "line"
      },
      "expansion": "key + line",
      "name": "compound"
    }
  ],
  "etymology_text": "From key + line.",
  "forms": [
    {
      "form": "keylines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "keyline (plural keylines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "74 26",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
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        {
          "_dis": "76 24",
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          "name": "Pages with 1 entry",
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          "source": "w+disamb"
        },
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          "_dis": "77 23",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A contour line connecting all points in valley at the same elevation as the keypoint, used in planning efficient water usage."
      ],
      "id": "en-keyline-en-noun-V0pYQa1S",
      "links": [
        [
          "contour line",
          "contour line"
        ],
        [
          "valley",
          "valley"
        ],
        [
          "elevation",
          "elevation"
        ],
        [
          "keypoint",
          "keypoint"
        ],
        [
          "water",
          "water"
        ]
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Graphic design",
          "orig": "en:Graphic design",
          "parents": [
            "Design",
            "Art",
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A boundary line that separates color and monochromatic areas or differently colored areas of print."
      ],
      "id": "en-keyline-en-noun-a7UYN4HD",
      "links": [
        [
          "graphic design",
          "graphic design"
        ],
        [
          "boundary",
          "boundary"
        ],
        [
          "separate",
          "separate"
        ],
        [
          "color",
          "color"
        ],
        [
          "monochromatic",
          "monochromatic"
        ],
        [
          "print",
          "print"
        ]
      ],
      "raw_glosses": [
        "(graphic design) A boundary line that separates color and monochromatic areas or differently colored areas of print."
      ],
      "topics": [
        "arts",
        "graphic-design"
      ]
    }
  ],
  "word": "keyline"
}

{
  "categories": [
    "English compound terms",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "key",
        "3": "line"
      },
      "expansion": "key + line",
      "name": "compound"
    }
  ],
  "etymology_text": "From key + line.",
  "forms": [
    {
      "form": "keylines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "keyline (plural keylines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A contour line connecting all points in valley at the same elevation as the keypoint, used in planning efficient water usage."
      ],
      "links": [
        [
          "contour line",
          "contour line"
        ],
        [
          "valley",
          "valley"
        ],
        [
          "elevation",
          "elevation"
        ],
        [
          "keypoint",
          "keypoint"
        ],
        [
          "water",
          "water"
        ]
      ]
    },
    {
      "categories": [
        "en:Graphic design"
      ],
      "glosses": [
        "A boundary line that separates color and monochromatic areas or differently colored areas of print."
      ],
      "links": [
        [
          "graphic design",
          "graphic design"
        ],
        [
          "boundary",
          "boundary"
        ],
        [
          "separate",
          "separate"
        ],
        [
          "color",
          "color"
        ],
        [
          "monochromatic",
          "monochromatic"
        ],
        [
          "print",
          "print"
        ]
      ],
      "raw_glosses": [
        "(graphic design) A boundary line that separates color and monochromatic areas or differently colored areas of print."
      ],
      "topics": [
        "arts",
        "graphic-design"
      ]
    }
  ],
  "word": "keyline"
}