"five-eighth" meaning in English

{
  "forms": [
    {
      "form": "five-eighths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "five-eighth (plural five-eighths)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rugby",
          "orig": "en:Rugby",
          "parents": [
            "Ball games",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "first five-eighth"
        },
        {
          "word": "second five-eighth"
        }
      ],
      "glosses": [
        "A rugby position, one of the two half backs in a team, partnering the scrum-half."
      ],
      "id": "en-five-eighth-en-noun-Hd6AMbwP",
      "links": [
        [
          "rugby",
          "rugby"
        ]
      ],
      "raw_glosses": [
        "(rugby) A rugby position, one of the two half backs in a team, partnering the scrum-half."
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "rugby",
        "sports"
      ],
      "wikipedia": [
        "five-eighth"
      ]
    }
  ],
  "word": "five-eighth"
}

{
  "derived": [
    {
      "word": "first five-eighth"
    },
    {
      "word": "second five-eighth"
    }
  ],
  "forms": [
    {
      "form": "five-eighths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "five-eighth (plural five-eighths)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Rugby"
      ],
      "glosses": [
        "A rugby position, one of the two half backs in a team, partnering the scrum-half."
      ],
      "links": [
        [
          "rugby",
          "rugby"
        ]
      ],
      "raw_glosses": [
        "(rugby) A rugby position, one of the two half backs in a team, partnering the scrum-half."
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "rugby",
        "sports"
      ],
      "wikipedia": [
        "five-eighth"
      ]
    }
  ],
  "word": "five-eighth"
}