"back row" meaning in English

{
  "forms": [
    {
      "form": "back rows",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "back row (plural back rows)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "The last row of seats in a theater or any group of seats."
      ],
      "id": "en-back_row-en-noun-PSGy6WTY"
    },
    {
      "derived": [
        {
          "_dis1": "27 46 27",
          "word": "backrower"
        }
      ],
      "glosses": [
        "A row near the back of the theater or group of seats."
      ],
      "id": "en-back_row-en-noun-jKBDhAcf",
      "synonyms": [
        {
          "_dis1": "27 46 27",
          "word": "back-row"
        },
        {
          "_dis1": "27 46 27",
          "word": "backrow"
        }
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rugby",
          "orig": "en:Rugby",
          "parents": [
            "Ball games",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "13 27 60",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "16 26 58",
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "9 26 65",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "16 24 60",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "16 23 61",
          "kind": "other",
          "name": "Terms with Catalan translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "16 26 58",
          "kind": "other",
          "name": "Terms with Irish translations",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The row of players in a scrum, consisting of two flankers and a number eight."
      ],
      "id": "en-back_row-en-noun-7DSL-nI5",
      "links": [
        [
          "rugby",
          "rugby"
        ],
        [
          "scrum",
          "scrum"
        ],
        [
          "flanker",
          "flanker"
        ],
        [
          "number eight",
          "number eight"
        ]
      ],
      "raw_glosses": [
        "(rugby) The row of players in a scrum, consisting of two flankers and a number eight."
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "rugby",
        "sports"
      ],
      "translations": [
        {
          "_dis1": "4 5 91",
          "code": "ca",
          "lang": "Catalan",
          "sense": "rugby",
          "tags": [
            "feminine"
          ],
          "word": "tercera línia"
        },
        {
          "_dis1": "4 5 91",
          "code": "ga",
          "lang": "Irish",
          "sense": "rugby",
          "tags": [
            "feminine"
          ],
          "word": "líne chúil"
        }
      ]
    }
  ],
  "word": "back row"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Entries with translation boxes",
    "Pages with 1 entry",
    "Pages with entries",
    "Terms with Catalan translations",
    "Terms with Irish translations"
  ],
  "derived": [
    {
      "word": "backrower"
    }
  ],
  "forms": [
    {
      "form": "back rows",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "back row (plural back rows)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "The last row of seats in a theater or any group of seats."
      ]
    },
    {
      "glosses": [
        "A row near the back of the theater or group of seats."
      ]
    },
    {
      "categories": [
        "en:Rugby"
      ],
      "glosses": [
        "The row of players in a scrum, consisting of two flankers and a number eight."
      ],
      "links": [
        [
          "rugby",
          "rugby"
        ],
        [
          "scrum",
          "scrum"
        ],
        [
          "flanker",
          "flanker"
        ],
        [
          "number eight",
          "number eight"
        ]
      ],
      "raw_glosses": [
        "(rugby) The row of players in a scrum, consisting of two flankers and a number eight."
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "rugby",
        "sports"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "back-row"
    },
    {
      "word": "backrow"
    }
  ],
  "translations": [
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "rugby",
      "tags": [
        "feminine"
      ],
      "word": "tercera línia"
    },
    {
      "code": "ga",
      "lang": "Irish",
      "sense": "rugby",
      "tags": [
        "feminine"
      ],
      "word": "líne chúil"
    }
  ],
  "word": "back row"
}