"πυραμίδοιν" meaning in Ancient Greek

{
  "forms": [
    {
      "form": "puramídoin",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "grc",
        "2": "noun form"
      },
      "expansion": "πυραμίδοιν • (puramídoin)",
      "name": "head"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "58 42",
          "kind": "other",
          "name": "Ancient Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "67 33",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "83 17",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "extra": "puramís",
          "word": "πυραμίς"
        }
      ],
      "glosses": [
        "genitive dual of πυραμίς (puramís)"
      ],
      "id": "en-πυραμίδοιν-grc-noun-fEy0sqDJ",
      "links": [
        [
          "πυραμίς",
          "πυραμίς#Ancient_Greek"
        ]
      ],
      "tags": [
        "dual",
        "form-of",
        "genitive"
      ]
    },
    {
      "form_of": [
        {
          "extra": "puramís",
          "word": "πυραμίς"
        }
      ],
      "glosses": [
        "dative dual of πυραμίς (puramís)"
      ],
      "id": "en-πυραμίδοιν-grc-noun-maNf5tKI",
      "links": [
        [
          "πυραμίς",
          "πυραμίς#Ancient_Greek"
        ]
      ],
      "tags": [
        "dative",
        "dual",
        "form-of"
      ]
    }
  ],
  "word": "πυραμίδοιν"
}

{
  "categories": [
    "Ancient Greek entries with incorrect language header",
    "Ancient Greek non-lemma forms",
    "Ancient Greek noun forms",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "puramídoin",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "grc",
        "2": "noun form"
      },
      "expansion": "πυραμίδοιν • (puramídoin)",
      "name": "head"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "noun",
  "senses": [
    {
      "form_of": [
        {
          "extra": "puramís",
          "word": "πυραμίς"
        }
      ],
      "glosses": [
        "genitive dual of πυραμίς (puramís)"
      ],
      "links": [
        [
          "πυραμίς",
          "πυραμίς#Ancient_Greek"
        ]
      ],
      "tags": [
        "dual",
        "form-of",
        "genitive"
      ]
    },
    {
      "form_of": [
        {
          "extra": "puramís",
          "word": "πυραμίς"
        }
      ],
      "glosses": [
        "dative dual of πυραμίς (puramís)"
      ],
      "links": [
        [
          "πυραμίς",
          "πυραμίς#Ancient_Greek"
        ]
      ],
      "tags": [
        "dative",
        "dual",
        "form-of"
      ]
    }
  ],
  "word": "πυραμίδοιν"
}