"není zač" meaning in Tchèque

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en tchèque",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Interjections en tchèque",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en tchèque",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Tchèque",
      "orig": "tchèque",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de není et de zač."
  ],
  "lang": "Tchèque",
  "lang_code": "cs",
  "pos": "intj",
  "pos_title": "Interjection",
  "senses": [
    {
      "glosses": [
        "De rien."
      ],
      "id": "fr-není_zač-cs-intj-uSo0HYWI"
    }
  ],
  "word": "není zač"
}

{
  "categories": [
    "Compositions en tchèque",
    "Interjections en tchèque",
    "Lemmes en tchèque",
    "tchèque"
  ],
  "etymology_texts": [
    "Composé de není et de zač."
  ],
  "lang": "Tchèque",
  "lang_code": "cs",
  "pos": "intj",
  "pos_title": "Interjection",
  "senses": [
    {
      "glosses": [
        "De rien."
      ]
    }
  ],
  "word": "není zač"
}