"δήν" meaning in Ancient Greek

{
  "etymology_templates": [
    {
      "args": {
        "1": "grc",
        "2": "grk-pro",
        "3": "*dwān"
      },
      "expansion": "Proto-Hellenic *dwān",
      "name": "inh"
    },
    {
      "args": {
        "1": "grc",
        "2": "ine-pro",
        "3": "",
        "4": "*dweh₂-m"
      },
      "expansion": "Proto-Indo-European *dweh₂-m",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Hellenic *dwān, from Proto-Indo-European *dweh₂-m, from the root *dweh₂- (“long, far”). Related to δηρός (dērós).",
  "forms": [
    {
      "form": "dḗn",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "δήν • (dḗn)",
      "name": "grc-adverb"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "_dis": "68 32",
          "kind": "other",
          "name": "Ancient Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "94 6",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "for a long time"
      ],
      "id": "en-δήν-grc-adv-sbu~-kMM",
      "links": [
        [
          "long",
          "long"
        ],
        [
          "time",
          "time"
        ]
      ],
      "synonyms": [
        {
          "word": "δηθά"
        }
      ]
    },
    {
      "glosses": [
        "long ago"
      ],
      "id": "en-δήν-grc-adv-x5hDSAv6",
      "links": [
        [
          "long ago",
          "long ago"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/dɛ̌ːn/"
    },
    {
      "ipa": "/ðin/"
    },
    {
      "ipa": "/ðin/"
    },
    {
      "ipa": "/dɛ̌ːn/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/de̝n/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/ðin/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/ðin/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/ðin/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "δήν"
}

{
  "categories": [
    "Ancient Greek 1-syllable words",
    "Ancient Greek adverbs",
    "Ancient Greek entries with incorrect language header",
    "Ancient Greek lemmas",
    "Ancient Greek oxytone terms",
    "Ancient Greek terms derived from Proto-Hellenic",
    "Ancient Greek terms derived from Proto-Indo-European",
    "Ancient Greek terms inherited from Proto-Hellenic",
    "Ancient Greek terms inherited from Proto-Indo-European",
    "Ancient Greek terms with IPA pronunciation",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "grc",
        "2": "grk-pro",
        "3": "*dwān"
      },
      "expansion": "Proto-Hellenic *dwān",
      "name": "inh"
    },
    {
      "args": {
        "1": "grc",
        "2": "ine-pro",
        "3": "",
        "4": "*dweh₂-m"
      },
      "expansion": "Proto-Indo-European *dweh₂-m",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Hellenic *dwān, from Proto-Indo-European *dweh₂-m, from the root *dweh₂- (“long, far”). Related to δηρός (dērós).",
  "forms": [
    {
      "form": "dḗn",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "δήν • (dḗn)",
      "name": "grc-adverb"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "adv",
  "senses": [
    {
      "glosses": [
        "for a long time"
      ],
      "links": [
        [
          "long",
          "long"
        ],
        [
          "time",
          "time"
        ]
      ],
      "synonyms": [
        {
          "word": "δηθά"
        }
      ]
    },
    {
      "glosses": [
        "long ago"
      ],
      "links": [
        [
          "long ago",
          "long ago"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/dɛ̌ːn/"
    },
    {
      "ipa": "/ðin/"
    },
    {
      "ipa": "/ðin/"
    },
    {
      "ipa": "/dɛ̌ːn/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/de̝n/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/ðin/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/ðin/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/ðin/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "δήν"
}