"gainline" meaning in English

{
  "forms": [
    {
      "form": "gainlines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "gainline (plural gainlines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "gain line"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2019 November 2, Robert Kitson, “Rugby World Cup: South Africa surge to glory as England fall short”, in The Observer:",
          "text": "From the moment Kyle Sinckler was knocked out cold in the third minute following an accidental collision, England appeared trapped in the headlights, totally unable to gain the kind of gainline ascendancy that shocked New Zealand a week earlier.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of gain line"
      ],
      "id": "en-gainline-en-noun-LxhGmVKU",
      "links": [
        [
          "gain line",
          "gain line#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "gainline"
}

{
  "forms": [
    {
      "form": "gainlines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "gainline (plural gainlines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "gain line"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2019 November 2, Robert Kitson, “Rugby World Cup: South Africa surge to glory as England fall short”, in The Observer:",
          "text": "From the moment Kyle Sinckler was knocked out cold in the third minute following an accidental collision, England appeared trapped in the headlights, totally unable to gain the kind of gainline ascendancy that shocked New Zealand a week earlier.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of gain line"
      ],
      "links": [
        [
          "gain line",
          "gain line#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "gainline"
}