"gain line" meaning in English

{
  "forms": [
    {
      "form": "gain lines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "gain line (plural gain lines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rugby",
          "orig": "en:Rugby",
          "parents": [
            "Ball games",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "an imaginary line running across the pitch perpendicular to the touchline and passing through the breakdown or set piece. The subsequent phase is said to have passed \"over the gain line\" if the gain line at the subsequent breakdown is in front of the last, or \"behind the gain line\" if it is behind."
      ],
      "id": "en-gain_line-en-noun--d6~zjC4",
      "links": [
        [
          "rugby",
          "rugby"
        ],
        [
          "touchline",
          "touchline"
        ],
        [
          "breakdown",
          "breakdown"
        ],
        [
          "set piece",
          "set piece"
        ]
      ],
      "raw_glosses": [
        "(rugby) an imaginary line running across the pitch perpendicular to the touchline and passing through the breakdown or set piece. The subsequent phase is said to have passed \"over the gain line\" if the gain line at the subsequent breakdown is in front of the last, or \"behind the gain line\" if it is behind."
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "rugby",
        "sports"
      ]
    },
    {
      "alt_of": [
        {
          "word": "line to gain"
        }
      ],
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Football (American)",
          "orig": "en:Football (American)",
          "parents": [
            "Football",
            "Ball games",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "41 59",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Alternative form of line to gain"
      ],
      "id": "en-gain_line-en-noun-lTlK6O7B",
      "links": [
        [
          "American football",
          "American football"
        ],
        [
          "line to gain",
          "line to gain#English"
        ]
      ],
      "raw_glosses": [
        "(American football) Alternative form of line to gain"
      ],
      "synonyms": [
        {
          "_dis1": "38 62",
          "word": "gainline"
        }
      ],
      "tags": [
        "alt-of",
        "alternative"
      ],
      "topics": [
        "American-football",
        "ball-games",
        "football",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "word": "gain line"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "forms": [
    {
      "form": "gain lines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "gain line (plural gain lines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Rugby"
      ],
      "glosses": [
        "an imaginary line running across the pitch perpendicular to the touchline and passing through the breakdown or set piece. The subsequent phase is said to have passed \"over the gain line\" if the gain line at the subsequent breakdown is in front of the last, or \"behind the gain line\" if it is behind."
      ],
      "links": [
        [
          "rugby",
          "rugby"
        ],
        [
          "touchline",
          "touchline"
        ],
        [
          "breakdown",
          "breakdown"
        ],
        [
          "set piece",
          "set piece"
        ]
      ],
      "raw_glosses": [
        "(rugby) an imaginary line running across the pitch perpendicular to the touchline and passing through the breakdown or set piece. The subsequent phase is said to have passed \"over the gain line\" if the gain line at the subsequent breakdown is in front of the last, or \"behind the gain line\" if it is behind."
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "rugby",
        "sports"
      ]
    },
    {
      "alt_of": [
        {
          "word": "line to gain"
        }
      ],
      "categories": [
        "en:Football (American)"
      ],
      "glosses": [
        "Alternative form of line to gain"
      ],
      "links": [
        [
          "American football",
          "American football"
        ],
        [
          "line to gain",
          "line to gain#English"
        ]
      ],
      "raw_glosses": [
        "(American football) Alternative form of line to gain"
      ],
      "tags": [
        "alt-of",
        "alternative"
      ],
      "topics": [
        "American-football",
        "ball-games",
        "football",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "gainline"
    }
  ],
  "word": "gain line"
}