"ją" meaning in Polish

{
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "pronoun form"
      },
      "expansion": "ją",
      "name": "head"
    }
  ],
  "hyphenation": [
    "ją"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              10,
              12
            ]
          ],
          "english": "I saw her today.",
          "text": "Widziałem ją dzisiaj.",
          "type": "example"
        }
      ],
      "form_of": [
        {
          "word": "ona"
        }
      ],
      "glosses": [
        "accusative singular of ona"
      ],
      "id": "en-ją-pl-pron-nsQ4s3xJ",
      "links": [
        [
          "ona",
          "ona#Polish"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈjɔw̃/"
    },
    {
      "rhymes": "-ɔw̃"
    }
  ],
  "word": "ją"
}

{
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "pronoun form"
      },
      "expansion": "ją",
      "name": "head"
    }
  ],
  "hyphenation": [
    "ją"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "Pages with 2 entries",
        "Pages with entries",
        "Polish 1-syllable words",
        "Polish entries with incorrect language header",
        "Polish non-lemma forms",
        "Polish pronoun forms",
        "Polish terms with IPA pronunciation",
        "Polish terms with audio pronunciation",
        "Polish terms with usage examples",
        "Rhymes:Polish/ɔw̃",
        "Rhymes:Polish/ɔw̃/1 syllable"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              10,
              12
            ]
          ],
          "english": "I saw her today.",
          "text": "Widziałem ją dzisiaj.",
          "type": "example"
        }
      ],
      "form_of": [
        {
          "word": "ona"
        }
      ],
      "glosses": [
        "accusative singular of ona"
      ],
      "links": [
        [
          "ona",
          "ona#Polish"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈjɔw̃/"
    },
    {
      "rhymes": "-ɔw̃"
    }
  ],
  "word": "ją"
}