"jejku" meaning in Polish

{
  "etymology_templates": [
    {
      "args": {
        "1": "pl"
      },
      "expansion": "Onomatopoeic",
      "name": "onom"
    }
  ],
  "etymology_text": "Onomatopoeic.",
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "interjection"
      },
      "expansion": "jejku",
      "name": "head"
    }
  ],
  "hyphenation": [
    "jej‧ku"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish onomatopoeias",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "oh (used to show surprise or impatience)"
      ],
      "id": "en-jejku-pl-intj-HUSGztY4",
      "links": [
        [
          "oh",
          "oh"
        ]
      ],
      "synonyms": [
        {
          "word": "jej"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈjɛj.ku/"
    },
    {
      "rhymes": "-ɛjku"
    }
  ],
  "word": "jejku"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "pl"
      },
      "expansion": "Onomatopoeic",
      "name": "onom"
    }
  ],
  "etymology_text": "Onomatopoeic.",
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "interjection"
      },
      "expansion": "jejku",
      "name": "head"
    }
  ],
  "hyphenation": [
    "jej‧ku"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Polish 2-syllable words",
        "Polish entries with incorrect language header",
        "Polish interjections",
        "Polish lemmas",
        "Polish onomatopoeias",
        "Polish terms with IPA pronunciation",
        "Polish terms with audio links",
        "Rhymes:Polish/ɛjku",
        "Rhymes:Polish/ɛjku/2 syllables"
      ],
      "glosses": [
        "oh (used to show surprise or impatience)"
      ],
      "links": [
        [
          "oh",
          "oh"
        ]
      ],
      "synonyms": [
        {
          "word": "jej"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈjɛj.ku/"
    },
    {
      "rhymes": "-ɛjku"
    }
  ],
  "word": "jejku"
}