"εἰσίν" meaning in Ancient Greek

{
  "forms": [
    {
      "form": "εἰσῐ́ν",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "eisín",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "εἰσῐ́ν"
      },
      "expansion": "εἰσῐ́ν • (eisín)",
      "name": "grc-verb form"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Ancient Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ancient Greek terms with movable nu",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ancient Greek terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "(eimí) with movable nu: they are",
          "word": "εἰμί"
        }
      ],
      "glosses": [
        "third-person plural present active indicative of εἰμί (eimí) with movable nu: they are"
      ],
      "id": "en-εἰσίν-grc-verb-lTf-47q0",
      "links": [
        [
          "εἰμί",
          "εἰμί#Ancient Greek"
        ],
        [
          "movable nu",
          "movable nu#English"
        ]
      ],
      "synonyms": [
        {
          "english": "without movable nu",
          "roman": "eisí",
          "word": "εἰσῐ́"
        },
        {
          "roman": "eisi",
          "word": "εἰσι"
        },
        {
          "roman": "eisin",
          "tags": [
            "unstressed"
          ],
          "word": "εἰσιν"
        }
      ],
      "tags": [
        "active",
        "form-of",
        "indicative",
        "plural",
        "present",
        "third-person"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/eː.sín/"
    },
    {
      "ipa": "/iˈsin/"
    },
    {
      "ipa": "/iˈsin/"
    },
    {
      "ipa": "/eː.sín/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/iˈsin/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/iˈsin/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/iˈsin/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/iˈsin/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "εἰσίν"
}

{
  "forms": [
    {
      "form": "εἰσῐ́ν",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "eisín",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "εἰσῐ́ν"
      },
      "expansion": "εἰσῐ́ν • (eisín)",
      "name": "grc-verb form"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Ancient Greek 2-syllable words",
        "Ancient Greek entries with incorrect language header",
        "Ancient Greek non-lemma forms",
        "Ancient Greek oxytone terms",
        "Ancient Greek terms with IPA pronunciation",
        "Ancient Greek terms with movable nu",
        "Ancient Greek terms with redundant script codes",
        "Ancient Greek verb forms"
      ],
      "form_of": [
        {
          "extra": "(eimí) with movable nu: they are",
          "word": "εἰμί"
        }
      ],
      "glosses": [
        "third-person plural present active indicative of εἰμί (eimí) with movable nu: they are"
      ],
      "links": [
        [
          "εἰμί",
          "εἰμί#Ancient Greek"
        ],
        [
          "movable nu",
          "movable nu#English"
        ]
      ],
      "tags": [
        "active",
        "form-of",
        "indicative",
        "plural",
        "present",
        "third-person"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/eː.sín/"
    },
    {
      "ipa": "/iˈsin/"
    },
    {
      "ipa": "/iˈsin/"
    },
    {
      "ipa": "/eː.sín/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/iˈsin/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/iˈsin/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/iˈsin/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/iˈsin/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "synonyms": [
    {
      "english": "without movable nu",
      "roman": "eisí",
      "word": "εἰσῐ́"
    },
    {
      "roman": "eisi",
      "word": "εἰσι"
    },
    {
      "roman": "eisin",
      "tags": [
        "unstressed"
      ],
      "word": "εἰσιν"
    }
  ],
  "word": "εἰσίν"
}