"δεῖ" meaning in Grec ancien

{
  "categories": [
    {
      "kind": "other",
      "name": "Verbes en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Verbes impersonnels en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Wiktionnaire:Conjugaisons manquantes en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Grec ancien",
      "orig": "grec ancien",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Forme impersonnelle de δέω, déô (« lier »)."
  ],
  "lang": "Grec ancien",
  "lang_code": "grc",
  "pos": "verb",
  "pos_title": "Verbe",
  "raw_tags": [
    "δεῖ, deî"
  ],
  "senses": [
    {
      "examples": [
        {
          "text": "ὅπερ ἔδει δεῖξαι",
          "translation": "CQFD"
        }
      ],
      "glosses": [
        "Il faut, il est nécessaire."
      ],
      "id": "fr-δεῖ-grc-verb-J6ZTyN7h"
    }
  ],
  "sounds": [
    {
      "ipa": "*\\ˈdeːˌ\\"
    }
  ],
  "tags": [
    "impersonal"
  ],
  "word": "δεῖ"
}

{
  "categories": [
    "Verbes en grec ancien",
    "Verbes impersonnels en grec ancien",
    "Wiktionnaire:Conjugaisons manquantes en grec ancien",
    "grec ancien"
  ],
  "etymology_texts": [
    "Forme impersonnelle de δέω, déô (« lier »)."
  ],
  "lang": "Grec ancien",
  "lang_code": "grc",
  "pos": "verb",
  "pos_title": "Verbe",
  "raw_tags": [
    "δεῖ, deî"
  ],
  "senses": [
    {
      "examples": [
        {
          "text": "ὅπερ ἔδει δεῖξαι",
          "translation": "CQFD"
        }
      ],
      "glosses": [
        "Il faut, il est nécessaire."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "*\\ˈdeːˌ\\"
    }
  ],
  "tags": [
    "impersonal"
  ],
  "word": "δεῖ"
}