"ні" meaning in Ukrainien

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en ukrainien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en ukrainien issus d’un mot en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots indéclinables en ukrainien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en ukrainien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms des lettres grecques en ukrainien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ukrainien",
      "orig": "ukrainien",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du grec ancien νῦ, nû."
  ],
  "lang": "Ukrainien",
  "lang_code": "uk",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "⁽ⁿⁱ⁾",
    "neutre inanimé",
    "indéclinable"
  ],
  "related": [
    {
      "word": "ню"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en ukrainien de la linguistique",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Nu (treizième lettre et neuvième consonne de l’alphabet grec)."
      ],
      "id": "fr-ні-uk-noun-U8XXcb8u",
      "topics": [
        "linguistic"
      ]
    }
  ],
  "word": "ні"
}

{
  "categories": [
    "Lemmes en ukrainien",
    "Mots en ukrainien issus d’un mot en grec ancien",
    "Mots indéclinables en ukrainien",
    "Noms communs en ukrainien",
    "Noms des lettres grecques en ukrainien",
    "ukrainien"
  ],
  "etymology_texts": [
    "Du grec ancien νῦ, nû."
  ],
  "lang": "Ukrainien",
  "lang_code": "uk",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "⁽ⁿⁱ⁾",
    "neutre inanimé",
    "indéclinable"
  ],
  "related": [
    {
      "word": "ню"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en ukrainien de la linguistique"
      ],
      "glosses": [
        "Nu (treizième lettre et neuvième consonne de l’alphabet grec)."
      ],
      "topics": [
        "linguistic"
      ]
    }
  ],
  "word": "ні"
}