"silnymi" meaning in Polonais

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes d’adjectifs en polonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Polonais",
      "orig": "polonais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Polonais",
  "lang_code": "pl",
  "pos": "adj",
  "pos_title": "Forme d’adjectif",
  "senses": [
    {
      "form_of": [
        {
          "word": "silny"
        }
      ],
      "glosses": [
        "Instrumental pluriel de silny."
      ],
      "id": "fr-silnymi-pl-adj-xrIzLkku"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "silnymi"
}

{
  "categories": [
    "Formes d’adjectifs en polonais",
    "polonais"
  ],
  "lang": "Polonais",
  "lang_code": "pl",
  "pos": "adj",
  "pos_title": "Forme d’adjectif",
  "senses": [
    {
      "form_of": [
        {
          "word": "silny"
        }
      ],
      "glosses": [
        "Instrumental pluriel de silny."
      ]
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "silnymi"
}