"não" meaning in Vietnamees

{
  "categories": [
    {
      "kind": "other",
      "name": "Woorden in het Vietnamees",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Woorden in het Vietnamees met IPA-weergave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Woorden in het Vietnamees van lengte 3",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Zelfstandig naamwoord in het Vietnamees",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Vietnamees",
  "lang_code": "vi",
  "pos": "noun",
  "pos_title": "Zelfstandig naamwoord",
  "senses": [
    {
      "glosses": [
        "brein"
      ],
      "id": "nl-não-vi-noun-~uASxjF2"
    }
  ],
  "sounds": [
    {
      "ipa": "/naɔˀ˦˧˥/"
    }
  ],
  "synonyms": [
    {
      "word": "óc"
    },
    {
      "word": "bộ óc"
    }
  ],
  "word": "não"
}

{
  "categories": [
    "Woorden in het Vietnamees",
    "Woorden in het Vietnamees met IPA-weergave",
    "Woorden in het Vietnamees van lengte 3",
    "Zelfstandig naamwoord in het Vietnamees"
  ],
  "lang": "Vietnamees",
  "lang_code": "vi",
  "pos": "noun",
  "pos_title": "Zelfstandig naamwoord",
  "senses": [
    {
      "glosses": [
        "brein"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/naɔˀ˦˧˥/"
    }
  ],
  "synonyms": [
    {
      "word": "óc"
    },
    {
      "word": "bộ óc"
    }
  ],
  "word": "não"
}