"δει" meaning in Greek

{
  "forms": [
    {
      "form": "dei",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "verbf"
      },
      "expansion": "δει • (dei)",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "verb",
  "senses": [
    {
      "categories": [],
      "glosses": [
        "active nonfinite form of βλέπω (vlépo)"
      ],
      "id": "en-δει-el-verb-NjzwRiL0",
      "links": [
        [
          "βλέπω",
          "βλέπω#Greek"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "35 65",
          "kind": "other",
          "name": "Greek entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "41 59",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "25 75",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "extra": "vlépo",
          "word": "βλέπω"
        }
      ],
      "glosses": [
        "third-person singular dependent active of βλέπω (vlépo)"
      ],
      "id": "en-δει-el-verb-yiVHPA01",
      "links": [
        [
          "βλέπω",
          "βλέπω#Greek"
        ]
      ],
      "tags": [
        "active",
        "dependent",
        "form-of",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "δει"
}

{
  "categories": [
    "Greek entries with incorrect language header",
    "Greek non-lemma forms",
    "Greek verb forms",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "dei",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "verbf"
      },
      "expansion": "δει • (dei)",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Greek verb nonfinite forms"
      ],
      "glosses": [
        "active nonfinite form of βλέπω (vlépo)"
      ],
      "links": [
        [
          "βλέπω",
          "βλέπω#Greek"
        ]
      ]
    },
    {
      "form_of": [
        {
          "extra": "vlépo",
          "word": "βλέπω"
        }
      ],
      "glosses": [
        "third-person singular dependent active of βλέπω (vlépo)"
      ],
      "links": [
        [
          "βλέπω",
          "βλέπω#Greek"
        ]
      ],
      "tags": [
        "active",
        "dependent",
        "form-of",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "δει"
}